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2021
326. J.-M. Yang , Y.-K. Jung , J.-H. Lee , Y. C. Kim , S.-Y. Kim , D.-A. Park , J.-H. Kim , S.-Y. Jeong , S. Seo , J.-H. Park , I. Han, A. Walsh, N.-G. Park, Asymmetric Carrier Transport in Flexible Interface-type Memristor Enables Artificial Synapses with Sub-Femtojoule Energy Consumption, DOI: 10.1039/D1NH00452B

325. D.-K. Lee, N.-G. Park, Materials and Methods for High-Efficiency Perovskite Solar Modules, Sol. RRL 2021, 2100455

324. J.-H. Kim, S.-G. Kim, N.-G. Park, Effect of Chemical Bonding Nature of Post-Treatment Materials on Photovoltaic Performance of Perovskite Solar Cells, ACS Energy Lett. 2021, 6, 3435−3442

305. Daiyu Li, Deyi Zhang, Kwang-Soo Lim, Yue Hu, Yaoguang Rong, Anyi Mei,*
Nam-Gyu Park,* and Hongwei Han*
Daiyu Li, Deyi Zhang, Kwang-Soo Lim, Yue Hu, Yaoguang Rong, Anyi Mei,*
Nam-Gyu Park,* and Hongwei Han*
323. C. Ma, B. Kim, D.-H. Kang, S.-W. Kim, N.-G. Park, Nonchemical n- and p-Type Charge Transfer Doping of FAPbI3 Perovskite, 2021, https://doi.org/10.1021/acsenergylett.1c01233

322. M. Lyu, S. Park, H. Lee, B. S. Ma, S. H. Park, K.-H. Hong, H. Kim, T.-S. Kim, J. H. Noh, H. J. Son, and N.-G. Park, Simultaneous Enhanced Efficiency and Stability of Perovskite Solar Cells Using Adhesive Fluorinated Polymer Interfacial Material, 2021, https://doi.org/10.1021/acsami.1c05822

321. G. S. Shin, J.-H. Kim, S.-U. Lee, N.-G. Park, Viscosity Blending Approach for 22.42% Efficient Perovskite Solar Cells, Bull Korean Chem Soc. 2021

320. J. Chen, N.-G. Park, Nonhalide Materials for Efficient and Stable Perovskite Solar Cells, Small Methods 2021, 5, 2100311

319. H.-J. Kim, H.-S. Kim, N.-G. Park, Progress of Perovskite Solar Modules, Adv. Energy Sustainability Res. 2021, 2000051

318. J.-W. Lee, and N.-G. Park, Quasi-two-dimensional perovskite light emitting diodes for bright future, Light Sci. Appl. 2021, 10, 86

317. D.-K. Lee, Y. Shin, H. J. Jang, J.-H. Lee, K. Park, W. Lee, S. Yoo, J. Y. Lee, D. Kim, J.-W. Lee, and N.-G. Park, Nanocrystalline Polymorphic Energy Funnels for Efficient and Stable Perovskite Light Emitting Diodes, ACS Energy Lett. 2021, 6, 5, 1821–1830

316. S.-H. Lee, S. Jeong, S. Seo, H. Shin, C. Ma, and N.-G. Park, Acid Dissociation Constant: A Criterion for Selecting Passivation Agents in Perovskite Solar Cells, ACS Energy Lett. 2021, 6, 1612−1621

315. S.-G. Kim, J.-H. Kim, P. Ramming, Y. Zhong, K. Schötz, S. J. Kwon, S. Huettner, F. Panzer and N.-G. Park, How antisolvent miscibility affects perovskite film wrinkling and photovoltaic properties, Nat Commun, 2021, 12, 1554

314. O. Almora, D. Baran, G. C. Bazan, C. I. Cabrera, K. R. Catchpole, S. E.-Ela, F. Guo, J. Hauch, A. W. Y. Ho-Baillie, T. J. Jacobsson, R. A. J. Janssen, T. Kirchartz, N. Kopidakis, Y. Li, M. A. Loi, R. R. Lunt, X. Mathew, M. D. Mcgehee, J. M.,David, B. Mitzi, M. K. Nazeeruddin, J. Nelson, A. F. Nogueira, U. W. Paetzold, N.-G. Park, B. P. Rand, U. Rau, H. J. Snaith, E. Unger, L. Vaillant-Roca, H.-L. Yip, and C. J. Brabec, Reporting Device Performance of Emerging Photovoltaic Materials (Version 1), Authorea 2021

313. I. S. Yang, and N.‐G. Park, Dual Additive for Simultaneous Improvement of Photovoltaic Performance and Stability of Perovskite Solar Cell, Adv. Funct. Mater. 2021, 31, 2100396

312. K. Jung, W.-S. Chae, Y. C. Park, N.-G. Park, and M.-J. Lee, Amorphous AlO6–SnO2 nanocomposite electron-selective layers yielding over 21% efficiency in ambient-air-processed MAPbI3-based planar solar cells, Chem. Eng. J. 2021, 409, 128215

311. S.‐G. Kim, T Huong Le, T. de Monfreid, F. Goubard, T.‐T. Bui, and N.‐G. Park, Capturing Mobile Lithium Ions in a Molecular Hole Transporter Enhances the Thermal Stability of Perovskite Solar Cells, Adv. Mater. 2021, 33, 2007431

310.P. Nandi, Z. Li, Y. Kim, T. K. Ahn, N.-G. Park, and H. Shin, Stabilizing Mixed Halide Lead Perovskites against Photoinduced Phase Segregation by A-Site Cation Alloying, ACS Energy Lett. 2021, 6, 3, 837–847

309. J.-W. Lee, S. Seo, P. Nandi, H. S. Jung, N.-G. Park, and H. Shin, Dynamic structural property of organic-inorganic metal halide perovskite, iScience 2021, 24, 101959

308. C. Ma, B. Kim, S.-W. Kim and N.-G. Park, Dynamic halide perovskite heterojunction generates direct current, Energy Environ. Sci. 2021, 14, 374-381

307. D.-K. Lee, K.-S. Lim, J.-W. Lee and N.-G. Park, Scalable perovskite coating via anti-solvent-free Lewis acid–base adduct engineering for efficient perovskite solar modules, J. Mater. Chem. A 2021, 9, 3018-3028

306. D.-H Kang, S.-Y. Kim, J.-W. Lee and N.-G. Park, Efficient surface passivation of perovskite films by a post-treatment method with a minimal dose, J. Mater. Chem. A 2021, 9, 3441-3450
2020

305. D. Li, D. Zhang, K.-S. Lim, Y. Hu, Y. Rong, A. Mei, N.-G. Park, and H. Han, A Review on Scaling Up Perovskite Solar Cells, Adv. Funct. Mater. 2020, 2008621

304. H.-S. Kim, and N.-G. Park, Importance of tailoring lattice strain in halide perovskite crystals, NPG Asia Mater. 2020, 12, 78

303. N.-G. Park, Green solvent for perovskite solar cell production, Nat. Sustain. 2021, 4, 3, 192-193

302. M. Lyu, and N.-G. Park, Effect of Additives AX (A = FA, MA, Cs, Rb, NH4, X = Cl, Br, I) in FAPbI3 on Photovoltaic Parameters of Perovskite Solar Cells, Sol. RRL 2020, 4, 10, 2000331

301. C. Ma and N.-G. Park, Paradoxical Approach with a Hydrophilic Passivation Layer for Moisture-Stable, 23% Efficient Perovskite Solar Cells, ACS Energy Lett. 2020, 5, 10, 3268–3275

300. P. Nandi, D. Topwal, N.-G. Park, and H. Shin, Organic-Inorganic Hybrid Lead Halides as Absorber in Perovskite Solar Cells: A Debate on Ferroelectricity, J. Phys. D: Appl. Phys. 2020, 53, 493002

299. J.Y. Kim, J.-W. Lee, H.S. Jung, H. Shin, and N-G. Park, High-Efficiency Perovskite Solar Cells, Chem. Rev. 2020, 120, 15, 7867–7918

298. J. Chen, and N.-G. Park, Materials and Methods for Interface Engineering toward Stable and Efficient Perovskite Solar Cells, ACS Energy Lett. 2020, 5, 8, 2742–2786

297. T.W. Kim, and N.-G. Park, Methodologies for structural investigations of organic lead halide perovskites, Materials Today 2020, 38, 67-83

296. H. Kim, J.S. Kim, J.-M. Heo, M. Pei, I.-H. Park, Z. Liu, H.J. Yun, M.-H. Park, S.-H. Jeong, Y.-H. Kim, J.-W. Park, E. Oveisi, S. Nagane, A. Sadahanala, L. Zhang, J.J. Kweon, S.K. Lee, H. Yang, H.M. Jang, R.H. Friend, K.P. Loh, M.K. Nazeeruddin, N.-G. Park, and T.-W. Lee, Proton-transfer-induced 3D/2D hybrid perovskites suppress ion migration and reduce luminance overshoot, Nat. Commun. 2020, 11, 3378

295. D.-H. Kang, S.-G. Kim, Y.C. Kim, I.T. Hwan, H.J. Jang, J.Y. Lee, and N.-G. Park, CsPbBr3/CH3NH3PbCl38 Double Layer Enhances Efficiency and Lifetime of Perovskite Light-Emitting Diodes, ACS Energy Lett. 2020, 5, 2191-2199

294. C. Ma, and N.-G. Park, A Realistic Methodology for 30% Efficient Perovskite Solar Cells, Chem. 2020, 6, 1254-1264

293. S.-Y. Kim, J.-M. Yang, E.-S. Choi, and N.-G. Park, Layered (C6H5CH2NH3)2CuBr4 Perovskite for Multilevel Storage Resistive Switching Memory, Adv. Funct. Mater. 2020, 30, 2002653

292. G. S. Shin, Y. Zhang, and N.-G. Park, Stability of Precursor Solution for Perovskite Solar Cell: Mixture (FAI + PbI2) versus Synthetic FAPbI3 Crystal, ACS Appl. Mater. Interfaces 2020, 12, 15167-15174

291. N.-G. Park, and K. Zhu, Scalable fabrication and coating methods for perovskite solar cells and solar modules, Nat. Rev. Mater. 2020, 5, 333-350

290. M. V. Khenkin , E. A. Katz, A. Abate, G. Bardizza, J. J. Berry, C. Brabec, F. Brunetti, V. Bulović, Q. Burlingame, A. D. Carlo, R. Cheacharoen, Y.-B. Cheng, A. Colsmann , S. Cros, K. Domanski , M. Dusza, C. J. Fell , S. R. Forrest, Y. Galagan , D. D. Girolamo, M. Grätzel, A. Hagfeldt , E. Hauff,H. Hoppe, J. Kettle, H. Köbler , M. S. Leite , S. Liu, Y.-L. Loo, J. M. Luther, C.-Q. Ma , M. Madsen , M. Manceau, M. Matheron , M. McGehee , R. Meitzner, M. K. Nazeeruddin , A. F. Nogueira, Ç. Odabaşı , A. Osherov, N.-G. Park , M. O. Reese, F. D. Rossi, M. Saliba , U. S. Schubert , H. J. Snaith , S. D. Stranks , W. Tress , P. A. Troshin, V. Turkovic, S. Veenstra , I. V.-Fisher , A. Walsh , T. Watson, H. Xie, R. Yıldırım , S. M. Zakeeruddin, K. Zhu , and M. L.-Cantu, Consensus statement for stability assessment and reporting for perovskite photovoltaics based on ISOS procedures, Nat. Energy 2020, 5, 35–49

289. N.-G. Park, Perovskite Solar Cell: Research Direction for Next 10 Years, ACS Energy Lett. 2020, 4, 12, 2983-2985

288. H. S. Jung, G. S. Han, N.-G. Park, and M. J. Ko, Flexible Perovskite Solar Cells, Joule 2020, 3, 1850–1880

287. Y. Zhang, S. Seo, S.Y. Lim, Y. Kim, S.-G. Kim, D.-K. Lee, S.-H. Lee, H. Shin, and N.-G. Park, Achieving Reproducibility and High Efficiency (> 21%) Perovskite Solar Cells with a Pre-synthesized FAPbI3 Powder, ACS Energy Lett. 2020, 5, 2, 360-366

286. N.-G. Park, Research Direction toward Scalable, Stable, and High Efficiency Perovskite Solar Cells, Adv. Energy Mater. 2020, 10, 1903106

285. D.-N. Jeong, J.-M. Yang, and N.-G. Park, Roadmap on halide perovskite and related devices, Nanotechnology 2020, 31, 152001
2019


284. J.-W. Lee, and N.-G. Park, Chemical Approaches for Stabilizing Perovskite Solar Cells, Adv. Energy Mater. 2019, 10, 1903249

283. S. Seo, H.S. Jung, P.J. Yoo, J.H. Park, D.-Y. Jung, H. Shin, and N.-G. Park, Hot Scientific Debate on Halide Perovskites: Fundamentals, Photovoltaics, and Optoelectronics at Eighth Sungkyun International Solar Forum 2019 (SISF 2019), ACS Energy Lett. 2019, 4, 2475-2479

282. D.-K. Lee, D.-N. Jeong, T.K. Ahn, and N.-G. Park, Precursor Engineering for a Large-Area Perovskite Solar Cell with> 19% Efficiency, ACS Energy Lett. 2019, 4, 2393-2401

281. J. Chen, X. Zhao, S.-G. Kim, and N.-G. Park, Multifunctional Chemical Linker Imidazoleacetic Acid Hydrochloride for 21% Efficient and Stable Planar Perovskite Solar Cells, Adv. Mater. 2019, 31, 1902902

280. H. Park, I. J. Park, M. G. Lee, K. C. Kwon, S.-P. Hong, D. H. Kim, S. A Lee, T. H. Lee, C. Kim, C. W. Moon, D.-Y. Son, G. H. Jung, H. S. Yang, J. R. Lee, J. Lee, N.-G. Park, S. Y. Kim, J. Y. Kim, and H. W. Jang, Water Splitting Exceeding 17% Solar-to-Hydrogen Conversion Efficiency Using Solution-Processed Ni-Based Electrocatalysts and Perovskite/Si Tandem Solar Cell, ACS Appl. Mater. Interfaces 2019, 11, 33835-33843

279. L. Xie, J. Chen, P. Vashishtha, X. Zhao, G. S. Shin, S.G. Mhaisalkar, and N.-G. Park, Importance of Functional Groups in Cross-Linking Methoxysilane Additives for High-Efficiency and Stable Perovskite Solar Cells, ACS Energy Lett. 2019, 4, 2192-2200

278. G. S. Shin, S.-G. Kim, Y. Zhang, and N.-G. Park, A Correlation between Iodoplumbate and Photovoltaic Performance of Perovskite Solar Cells Observed by Precursor Solution Aging, Small Methods 2019, 4, 1900398

277. Y. Park, J. Choi, C. Lee, A.-N. Cho, D.W. Cho, N.-G. Park, H. Ihee, and J.Y. Park, Elongated Lifetime and Enhanced Flux of Hot Electrons on a Perovskite Plasmonic Nanodiode, Nano Lett. 2019, 19, 5489-5495

276. T. Wu, C. Zhen, H. Zhu, J. Wu, C. Jia, L. Wang, G. Liu, N.-G. Park, and H.-M. Cheng, Gradient Sn-Doped Heteroepitaxial Film of Faceted Rutile TiO2 as an Electron Selective Layer for Efficient Perovskite Solar Cells, ACS Appl. Mater. Interfaces 2019, 11, 19638-19646

275. Y.J. Choi, L. Debbichi, D.-K. Lee, N.-G. Park, H. Kim, and D. Kim, Light Emission Enhancement by Tuning the Structural Phase of APbBr3 (A = CH3NH3, Cs) Perovskites, J. Phys. Chem. Lett. 2019, 10, 2135-2142

274. J.-W. Lee, S.-G. Kim, J.-M. Yang, Y. Yang, and N.-G. Park, Verification and mitigation of ion migration in perovskite solar cells, APL Mater. 2019, 7, 041111

273. X. Zhao, J. Chen, and N.-G. Park, Importance of Oxygen Partial Pressure in Annealing NiO Film for High Efficiency Inverted Perovskite Solar Cells, Sol. RRL 2019, 3, 1800339

272. D.-H. Kang, and N.-G. Park, On the Current–Voltage Hysteresis in Perovskite Solar Cells: Dependence on Perovskite Composition and Methods to Remove Hysteresis, Adv. Mater. 2019, 31, 1805214

271. S.-G. Kim, C. Li, A. Guerrero, J.-M. Yang, Y. Zhong, J. Bisquert, S. Huettner, and N.-G. Park, Potassium ions as a kinetic controller in ionic double layers for hysteresis-free perovskite solar cells, J. Mater. Chem. A 2019, 7, 32, 18807-18815

270. E.-S. Choi, J.-M. Yang, S.-G. Kim, C. Cuhadar, S.-Y. Kim, S.H. Kim, D. Lee, and N.-G. Park, The effect of compositional engineering of imidazolium lead iodide on the resistive switching properties, Nanoscale 2019, 11, 30, 14455-14464

269. S.-Y. Kim, J.-M. Yang, E.-S. Choi, and N.-G. Park, Effect of interlayer spacing in layered perovskites on resistive switching memory, Nanoscale 2019, 11 (30), 14330-14338

268. D.-N. Jeong, D.-K. Lee, S. Seo, S. Lim, Y. Zhang, H. Shin, H. Cheong, and N.-G. Park, Perovskite Cluster-Containing Solution for Scalable D-Bar Coating toward High-Throughput Perovskite Solar Cells, ACS Energy Lett. 2019, 4 (5), 1189-1195

267. J.-M. Yang, E.-S. Choi, S.-Y. Kim, J.-H. Kim, J.-H. Park, and N.-G. Park, Perovskite-related (CH 3 NH 3) 3 Sb 2 Br 9 for forming-free memristor and low-energy-consuming neuromorphic computing, Nanoscale 2019, 11 (13), 6453-6461

266. J. Chen, S.-G. Kim, X. Ren, H.S. Jung, and N.-G. Park, Effect of bidentate and tridentate additives on the photovoltaic performance and stability of perovskite solar cells, J. Mater. Chem. A 2019, 7 (9), 4977-4987

265. S. Seo, S. Jeong, H. Park, H. Shin, and N.-G. Park, Atomic layer deposition for efficient and stable perovskite solar cells, Chem. Commun. 2019, 55 (17), 2403-2416

264. H.-S. Kim, A. Hagfeldt, and N.-G. Park, Morphological and compositional progress in halide perovskite solar cells, Chem. Commun. 2019, 55 (9), 1192-1200

263. Y. Zhang, S.-G. Kim, D. Lee, H. Shin, and N.-G. Park, Bifacial stamping for high efficiency perovskite solar cells, Energy & Environ. Sci. 2019, 12 (1), 308-321

262. M. Lyu, J. Chen, and N.-G. Park, Improvement of efficiency and stability of CuSCN-based inverted perovskite solar cells by post-treatment with potassium thiocyanate, J. Solid State Chem. 2019, 269, 367-374

2018

261. J. Chen, and N.-G. Park, Causes and solutions of recombination in perovskite solar cells, Adv. Mater. 2018, 31 (47), 1803019,

260. A.-N. Cho, I.-H. Jang, J.-Y. Seo, and N.-G. Park, Dependence of hysteresis on the perovskite film thickness: inverse behavior between TiO2 and PCBM in a normal planar structure. J. Mater. Chem. A 2018, 6, 18206-18215,

259. K. Alberi, M. B. Nardelli, A. Zakutayev, L. Mitas, S. Curtarolo, A. Jain, M. Fornari, N. Marzari, I. Takeuchi, M. L Green, M.G Kanatzidis, M. F Toney, S. Butenko, B. Meredig, S. Lany, U. Kattner, A. Davydov, E. Toberer, V. Stevanovic, A. Walsh, N.-G. Park, A. A.-Guzik, D. Tabor, J. Nelson, J. Murphy, A. Setlur, J. Gregoire, H. Li, R. Xiao, A. Ludwig, L. W Martin, A. Rappe, S.-H. Wei, and J. Perkins, The 2018 Materials by Design Roadmap. J. Phys. D: Appl. Phys. 2018, 52, 013001,

258. T. Sakaguchi, I. Jeon, T. Chiba, A. Shawky, R. Xiang, S. Chiashi, E. I. Kauppinen, N.-G. Park, Y. Matsuo, and S. Maruyama, Non-doped and unsorted single-walled carbon nanotubes as carrier-selective, transparent, and conductive electrode for perovskite solar cells. MRS Commun. 2018, 8 (13), 1058-1063,

257. J. Chen, S.‐G. Kim, and N.‐G. Park, FA0.88Cs0.12PbI3−x(PF6)x Interlayer Formed by Ion Exchange Reaction between Perovskite and Hole Transporting Layer for Improving Photovoltaic Performance and Stability. Adv. Mater. 2018, 30 (40), 1801948,

256. J.‐M. Yang, S.‐G. Kim, J.‐Y. Seo, C. Cuhadar, D.‐Y. Son, D. Lee, and N.‐G. Park,1D Hexagonal HC(NH2)2PbI3 for Multilevel Resistive Switching Nonvolatile Memory. Adv. Electron. Mater. 2018, 4 (9), 1800190

255. S.-G. Kim, J. Chen, J.-Y. Seo, D.-H. Kang, and N.-G. Park, Rear surface passivation by melaminium iodide additive for stable and hysteresis-less perovskite solar cells. ACS Appl. Mater. Interfaces 2018, 10 (30), 28372-25383,

254. C. Cuhadar, S.-G. Kim, J.-M. Yang, J.-Y. Seo, D. Lee, and N.-G. Park, All-Inorganic Bismuth Halide Perovskite-like Materials A3Bi2I9 and A3Bi1.8Na0.2I8.6 (A = Rb and Cs) for Low-Voltage Switching Resistive Memory, ACS Appl. Mater. Interfaces 2018, 10 (35), 29741-29749,

253. N.-G. Park, Halide perovskite photovoltaics: History, progress, and perspectives. MRS Bull. 2018, 43 (7), 527-553,

252. N.-G. Park, and H. Segawa, Research Direction toward Theoretical Efficiency in Perovskite Solar Cells, ACS Photonics 2018, 5 (8), 2970-2977,

251. S. Seo, S. Jeong, C. Bae, N.-G. Park, and H. Shin, Perovskite Solar Cells with Inorganic Electron- and Hole- Transport Layers Exhibiting Long-Term (≈500 h) Stability at 85 °C under Continuous 1 Sun Illumination in Ambient Air, Adv. Mater. 2018, 30, 1801010,

250. S. Benhattaba, A.-N. Cho, R. Nakara, N. Bertona, F. T.-Vana, N.-G. Park, and B. Schmaltza, Simply designed carbazole-based hole transporting materials for efficient perovskite solar cells, Org. Electron. 2018, 56, 27-30,

249. R. Nakar, A. N. Cho, N. Berton, J. F. Vincent, F. T. Van, N.-G. Park, and B. Schmaltz, Triphenylamine 3,6 carbazole derivative as hole transporting material for mixed cation perovskite solar cells, Chemical Papers 2018, 72 (7), 1779-1787,

248. Y. Zhang, S.-G. Kim, D.-K. Lee, and N.-G. Park, CH3NH3PbI3 and HC(NH2)2PbI3 Powders Synthesized from Low-Grade PbI2 : Single Precursor for High-Efficiency Perovskite Solar Cells, ChemSusChem 2018, 11, 1813-1823,

247. P. Zhao, M. Han, W. Yin, X. Zhao, S.-G. Kim, Y. Yan, M. Kim, Y. J. Song, N.-G. Park, and H. S. Jung, Insulated interlayer for efficient and photostable electron-transport-layer-free perovskite solar cells, ACS Appl. Mater. Interfaces 2018, 10 (12), 10132–10140,

246. J. Chen, and N.-G. Park, Inorganic Hole Transporting Materials for Stable and High Efficiency Perovskite Solar Cells, J. Phys. Chem. C 2018, 122 (25), 14039-14063,

245. H.-S. Yoo, and N.-G. Park, Post-treatment of perovskite film with phenylalkylammonium iodide for hysteresis-less perovskite solar cells, Sol. Energy Mater. Sol. Cells 2018, 179,57-65

244. S. I. Seok, M. Grätzel, and N.-G. Park, Methodologies toward Highly Efficient Perovskite Solar Cells, Small 2018, 14 (20),1704177,

243. L. Xie, A.-N. Cho, N.-G. Park, and K. Kim, An Efficient and Reproducible CH3NH3PbI3 Perovskite Layer Prepared Using a Binary Solvent Containing a Cyclic Urea Additive, ACS. Appl. Mater. interfaces 2018, 10 (11), 9390-9397,

242. J. Chen, J.-Y. Seo, and N.-G. Park, Simultaneous Improvement of Photovoltaic Performance and Stability by in-situ formation of 2-Dimensioanl Perovskite at (FAPbI3)0.88,(CsPbBr3)0.12/CuSCN Interface, Adv. Energy Mater. 2018, 8 (12), 1702714,

241. D.-Y. Son, S.-G. Kim, J.-Y. Seo, S.-H. Lee, D. Lee, and N.-G. Park, Universal Approach toward Hysteresis−Free Perovskite Solar Cell via Defect Engineering, J. Am. Chem. Soc. 2018, 140 (4),1358–1364

2017

240. H. S. Jung, D. G. Lee, H. Shin, P.J. Yoo, J. H. Park, D.-Y. Jung, and N.-G. Park, Enthusiastic Discussions on Halide Perovskite Materials beyond Photovoltaics at Sungkyun International Solar Forum 2017 (SISF2017), ACS Energy Lett. 2017, 3, 199-203

239. K.-H. Jung, J.-Y. Seo, S. Lee, H. Shin, and N.-G. Park, Solution-processed SnO2 thin film for a hysteresis-free planar perovskite solar cell with a power conversion efficiency of 19.2%, J. Mater. Chem. A 2017, 5, 24790-24803

238. Y. C. Kim, K. H. Kim, D.-Y. Son, D.-N. Jeong, J.-Y. Seo, Y. S. Choi, I. T. Han, S. Y. Lee, and N.-G. Park, Printable organometallic perovskite enables large-area, low-dose X-ray imaging, Nature 2017, 550, 87-91

237. J. Chen, D. Lee, and N.-G. Park, Stabilizing Ag Electrode and Reducing J-V Hysteresis via Suppression of Iodide Migration in Perovskite Solar Cell, ACS Appl. Mater. Interfaces 2017, 9 (41), 36338-36349

236. Z. Hawash, S. R. Raga, D.-Y. Son, N.-G. Park, and Y. Qi, Interfacial Modification of Perovskite Solar Cells Using an Ultrathin MAI Layer Leads to Enhanced Energy Level Alignment, Efficiencies, and Reproducibility, Nanoscale 2017, 9, 15278-15285

235. J.-Y. Seo, J. Choi, H.-S. Kim, J. Kim, J.-M. Yang, C. Cuhadar, J. S. Han, S.-J. Kim, D. Lee, H. W. Jang, and N.-G. Park, Wafer-Scale Reliable Switching Memory based on 2-Dimensional Layered Organic-Inorganic Halide Perovskite, Nanoscale 2017, 9, 15278-15285

234. A.-N. Cho, and N.-G. Park, Impact of Interfacial Layers in Perovskite Solar Cells, ChemSusChem 2017, 10, 3687-3704

233. L. K. Ono, N.-G. Park, K. Zhu, W. Huang, and Y. Qi, Perovskite Solar Cells—Towards Commercialization, ACS Energy Lett. 2017, 2, 1749-1751

232. J.-W. Lee, S.-G. Kim, S.-H. Bae, D.-K. Lee, O. Lin, Y. Yang, and N.-G. Park, The Interplay between Trap Density and Hysteresis in Planar Heterojunction Perovskite Solar Cells, Nano Lett. 2017, 17 (7), 4270-4276

231. J. Ciro, S. Mesa, J. I. Uribe, M. A. M.-Escobar, D. Ramirez, J. F. Montoya, R. Betancur, H.-S. Yoo, N.-G. Park, and F. Jaramillo, Optimization of the Ag/PCBM interface by Rhodamine interlayer to enhance efficiency and stability of perovskite solar cells, Nanoscale 2017, 9, 9440-9446

230. K. Kranthiraja, K. Gunasekar, H. Kim, A.-N. Cho, N.-G. Park, S. Kim, B. J. Kim, R. Nishikubo, A. Saeki, M. Song, and S.-H. Jin, High-Performance Long-Term-Stable Dopant-Free Perovskite Solar Cells and Additive-Free Organic Solar Cells by Employing Newly Designed Multirole π-Conjugated Polymers, Adv. Mater. 2017, 29, 1700183

229. A.-N. Cho, N. Chakravarthi, K. Kranthiraja, S. S. Reddy, H.-S. Kim, S.-H. Jin, and N.-G. Park, Acridine-based novel hole transporting material for high efficiency perovskite solar cells, J. Mater. Chem. A 2017, 5, 7603-7611

228. J.-W. Lee, Y. J. Choi, J.-M. Yang, S. Ham, S. K. Jeon, J. Y. Lee, Y.-H. Song, E. K. Ji, D.-H. Yoon, S. Seo, H. Shin, G. S. Han, H. S. Jung, D. Kim, and N.-G. Park, In-Situ Formed Type I Nanocrystalline Perovskite Film for Highly Efficient Light-Emitting Diode, ACS Nano 2017, 11, 3311-3319

227. X. Zhao, H.-S. Kim, J.-Y. Seo, and N.-G. Park, Effect of Selective Contacts on the Thermal Stability of Perovskite Solar Cells, ACS Appl. Mater. Interfaces 2017, 9, 7148-7153

226. D. Wei, J. Ji, D. Song, M. Li, P. Cui, Y.Li, J. M. Mbengue, W. Zhou, Z. Ning, and N.-G. Park, A TiO2 embedded structure for perovskite solar cells with anomalous grain growth and effective electron extraction, J. Mater. Chem. A 2017, 5, 1406-1414

225. S. Ham, Y. J. Choi, J.-W. Lee, N.-G. Park, and D. Kim, Impact of Excess CH3NH3I on Free Carrier Dynamics in High-Performance Non-Stoichiometric Perovskites, J. Phys. Chem. C 2017, 121, 3143-3148

2016

224. H.-S. Kim, J.-Y. Seo, and N.-G. Park, Impact of Selective Contacts on Long-Term Stability of CH3NH3PbI3 Perovskite Solar Cells, J. Phys. Chem. C 2016, 120, 27840-27848

223. N.-G. Park, Nonstoichiometric Adduct Approach for High-Efficiency Perovskite Solar Cells, Inorg. Chem. 2016, 56, 3-10,

222. N.-G. Park, M. Grätzel, T. Miyasaka, K. Zhu, and K. Emery, Towards stable and commercially available perovskite solar cells. Nat. Energy 2016, 16152,

221. N.-G. Park, Across the Board: Nam-Gyu Park, ChemSusChem 2016, 9, 2525-2527,

220. J.-W. Lee, H.-S. Kim, H. Shin, H. S. Jung, P. J. Yoo, J. H. Park, D.-Y. Jung, and N.-G. Park, A Sharp Focus on Perovskite Solar Cells at Sungkyun International Solar Forum (SISF), ACS Energy Lett. 2016, 1, 500-502,

219. M.-C. Kim, B. J. Kim, D.-Y. Son, N.-G. Park, H.-S. Jung, and M. Choi, Observation of Enhanced Hole Extraction in Br Concentration Gradient Perovskite Materials, Nano Lett. 2016, 16, 5756-5763,

218. H.-S. Kim, J.-Y. Seo, and N.-G. Park, Material and Device Stability in Perovskite Solar Cells, ChemSusChem 2016, 9, 2528-2540

217. Q. Chen, H. Liu, H.-S. Kim, Y. Liu, M. Yang, N. Yue, G. Ren, K. Zhu, S. Liu, N.-G. Park, and Y. Zhang, Multiple-stage structure transformation of organic-inorganic hybrid perovskite CH3NH3PbI3, Phys. Rev. X 2016, 6, 031042,

216. N.-G. Park, Methodologies for high efficiency perovskite solar cells, Nano Converg. 2016, 3:15,

215. A.-N. Cho, H.-S. Kim, T.-T. BUI, F. Goubard, X. Sallenave, and N.-G. Park, Role of LiTFSI in High Tg Triphenylamine-based Hole Transporting Material in Perovskite Solar Cell, RSC Adv. 2016, 6, 68553-68559

214. H. Kim, H.-S. Kim, J. Ha, N.-G. Park, and S. Yoo, Empowering Semi-Transparent Solar Cells with Thermal-Mirror Functionality, Adv. Energy Mater. 2016, 6 (14), 1502466,

213. J. Choi, S. Park, J. Lee, K. Hong, D.-H. Kim, H. S. Jung, N.-G. Park, S. Han, K. T. Nam, and H. W. Jang, Organolead Halide Perovskites for Low Operating Voltage Multilevel Resistive Switching, Adv. Mater. 2016, 28, 6562-6567

212. D.-Y. Son, J.-W. Lee, Y. J. Choi, I.-H. Jang, S. Lee, P. J. Yoo, H. Shin, N. Ahn, M. Choi, D. Kim, and N.-G. Park, Self-formed grain boundary healing layer for highly efficient CH3NH3PbI3 perovskite solar cells, Nat. Energy 2016, 1, 10681,

211. S. Seo, I. J. Park, M. Kim, S. Lee, C. Bae, H. S. Jung, N.-G. Park, J. Y. Kim, and H. Shin, An ultra-thin, un-doped NiO hole transporting layer of highly efficient (16.4%) organic–inorganic hybrid perovskite solar cells, Nanoscale 2016, 8, 11403-11412,

210. N.-G. Park, Crystal Growth Engineering for High Efficiency Perovskite Solar Cells, Cryst. Eng. Comm. 2016, 18, 5977-5985,

209. D. S., D. Wei, P. Cui, M. Li, Z. Duan, T. Wang, J. Ji, Y. Li, J. M. Mbenque, Y. Li, Y. He, M. Trevor, and N.-G. Park, Dual function interfacial layer for highly efficient and stable lead halide perovskite solar cells, J. Mater. Chem. A 2016, 4, 6091-6097,

208. S. M. Kang, S. Jang, J.-K. Lee, J. Yoon, D.-E. Yoo, J.-W. Lee, M. Choi, and N.-G. Park, Moth-Eye TiO2 Layer for Improving Light Harvesting Efficiency in Perovskite Solar Cells, Small 2016, 12, 2443-2449

207. J.-M. Cha, J.-W. Lee, D.-Y. Son, H.-S. Kim, I.-H. Jang, and N.-G. Park, Mesoscopic perovskite solar cells with an admixture of nanocrystalline TiO2 and Al2O3: role of interconnectivity of TiO2 in charge collection, Nanoscale 2016, 8, 6341-6351

206. J.-W. Lee, H.-S. Kim, and N.-G. Park, Lewis Acid–Base Adduct Approach for High Efficiency Perovskite Solar Cells, Acc. Chem. Res. 2016, 49, 311–319

205. H. Sung, N. Ahn, M. S. Jang, J.-K. Lee, H. Yoon, N.-G. Park, and M. Choi, Transparent Conductive Oxide-Free Graphene-Based Perovskite Solar Cells with over 17% Efficiency, Adv. Energy Mater. 2016, 6, 1501873

204. A. Kim, H. Lee, H.-C. Kwon, H. S. Jung, N.-G. Park, S. Jeong, and J. Moon, Fully solution-processed transparent electrodes based on silver nanowire composites for perovskite solar cells, Nanoscale 2016, 8, 6308-6316
2015

203. I. J. Park, M. A. Park, D. H. Kim, G. D. Park, B. J. Kim, H. J. Son, M. J. Ko, D.-K. Lee, T. Park, H. Shin, N.-G. Park, H. S. Jung, and J. Y. Kim, New Hybrid Hole Extraction Layer of Perovskite Solar Cells with a Planar p−i−n Geometry, J. Phys. Chem. C 2015, 119, 27285−27290

202. G. S. Han, Y. H. Song, Y. U. Jin, J.-W. Lee, N.-G. Park, B. K. Kang, J.-K. Lee, I. S. Cho, D. H. Yoon, and H. S. Jung, Reduced Graphene Oxide/Mesoporous TiO2 Nanocomposite Based Perovskite Solar Cells, ACS Appl. Mater. Interfaces 2015, 7, 23521−23526

201. X. Zhao, and N.-G. Park, Stability Issues on Perovskite Solar Cells, Photonics 2015, 2, 1139-1151

200. R. Ohmann, L. K. Ono, H.-S. Kim, H. Lin, M. V. Lee, Y. Li, N.-G. Park, and Y. Qi, Real-space imaging of the atomic structure of organic-inorganic perovskite, J. Am. Chem. Soc. 2015, 137, 16049-16054

199. M.-C. Kim, B. J. Kim, J. Yoon, J.-W. Lee, D. Suh, N.-G. Park , M. Choi, and H. S. Jung, Electro-spray Deposition of Mesoporous TiO2 Charge Collection Layer: Toward Large Scale and Continuous Production of Highly Efficiency Perovskite Solar Cell, Nanoscale 2015, 7, 20725-20733

198. H.-S. Kim, I.-H. Jang, N. Ahn, M. Choi, A. Guerrero, J. Bisquert, and N.-G. Park, Control of I–V Hysteresis in CH3NH3PbI3 Perovskite Solar Cell, J. Phys. Chem. Lett. 2015, 6, 4633-4639

197. S. Mastroianni , F. D. Heinz , J.-H. Im , W. Veurman , M. Padilla , M. C. Schubert , U. Würfel , M. Grätzel , and N.-G. Park, A. Hinsch, Analysing the effect of crystal size and structure in highly efficient CH3NH3PbI3 perovskite solar cells by spatially resolved photo- and electroluminescence imaging, Nanoscale 2015, 7, 19653-19662

196. J.-W. Lee, D.-H. Kim, H.-S. Kim, S.-W. Seo, S. M. Cho, and N.-G. Park, Formamidinium and Cesium Hybridization for Photo- and Moisture-Stable Perovskite Solar Cell, Adv. Energy Mater. 2015, 5, 1501310

195. A R. Park, D.-Y. Son, J. S. Kim, J. Y. Lee, N.-G. Park, J. Park, J. K. Lee, and P. J. Yoo, Si/Ti2O3/Reduced Graphene Oxide Nanocomposite Anodes for Lithium-Ion Batteries with Highly Enhanced Cyclic Stability, ACS Appl. Mater. Interfaces 2015, 7, 18483−18490

194. G. S. Han, H. S. Chung, D. H. Kim, B. J. Kim, J.-W. Lee, N.-G. Park, I. S. Cho, J.-K. Lee, S. Lee, and H. S. Jung, Epitaxial 1D Electron Transport Layers for HighPerformance Perovskite Solar Cells, Nanoscale 2015, 7, 15284-15290

193. N. Ahn, S. M. Kang, J.-W. Lee, M. Choi, and N.-G. Park, Thermodynamic Regulation of CH3NH3PbI3 Crystal Growth and Its Effect on Photovoltaic Performance of Perovskite Solar Cell, J. Mater. Chem. A 2015, 3, 19901-19906

192. N.-G. Park, Emergence and Evolution of Organometal Halide Perovskite Solar Cell, Rapid Commun. Photosci 2015, 4, 29-30

191. J.-W. Lee, and N.-G. Park, Two-step deposition method for high-efficiency perovskite solar cells, MRS Bull. 2015, 40, 654-659

190. Y. Kim, T. I. Ryu, K.-H. Ok, M.-G. Kwak, S. Park, N.-G. Park, C. J. Han, B. S. Kim, M. J. Ko, H. J. Son, and J.-W. Kim, Inverted Layer-By-Layer Fabrication of an Ultraflexible and Transparent Ag Nanowire/Conductive Polymer Composite Electrode for Use in High-Performance Organic Solar Cells, Adv. Funct. Mater. 2015, 25, 4580–4589

189. N.-G. Park, Sustainable Chemistry at Sungkyunkwan University, ChemSusChem 2015, 8, 2271

188. N. Ahn , D.-Y. Son , I.-H. Jang , S. M. Kang , M. Choi , and N.-G. Park, Highly Reproducible Perovskite Solar Cells with Average Efficiency of 18.3% and Best Efficiency of 19.7% Fabricated via Lewis Base Adduct of Lead(II) Iodide, J. Am. Chem. Soc. 2015, 137 (27), 8696–8699

187. S.-B. Ko, T. I. Ryu, A.-N. Cho, J. Fujisawa, H. Segawa, and N.-G. Park, Visible light absorption and photoelectrochemical activity of colorless molecular 1,3-bis(dicyanomethylidene)indane (BDMI) by surface complexation on TiO2, Phys. Chem. Chem. Phys. 2015, 17, 18541-18546

186. B. J. Kim, D. H. Kim, Y.-Y. Lee, H.-W. Shin, G. S. Han, J. S. Hong, K. Mahmood, T. K. Ahn, Y.-C. Joo, K. S. Hong, N.-G. Park, S. Lee, and H. S. Jung, Highly efficient and bending durable perovskite solar cells: toward a wearable power source, Energy Environ. Sci. 2015, 8, 916-921

185. H.-W. Kang, J.-W. Lee, D.-Y. Son, and N.-G. Park, Modulation of Photovoltage in Mesoscopic Perovskite Solar Cell by Controlled Interfacial Electron Injection, RSC Adv. 2015, 5, 47334 - 47340

184. Z. Lin, N.-G. Park, and G. Li, Themed issue on perovskite solar cells, J. Mater. Chem. A 2015, 3, 8924-8925

183. D.-Y. Son, C.-R. Lee, H.-W. Shin, I.-H. Jang, H. S. Jung, T. K. Ahn, and N.-G. Park, Understanding the role of the dye/oxide interface via SnO2-based MK-2 dye-sensitized solar cells, PhyChemChemPhy 2015, 17, 15193-15200

182. D.-Y. Son , K.-H. Bae , H.-S. Kim, and N.-G. Park, Effects of Seed Layer on Growth of ZnO Nanorod and Performance of Perovskite Solar Cell, J. Phys. Chem. C 2015, 119 (19), 10321–10328

181. H.-S. Kim, S. K. Kim, B. J. Kim, K.-S. Shin, M. K. Gupta, H. S. Jung, S.-W. Kim, and N.-G. Park, Ferroelectric Polarization in CH3NH3PbI3 Perovskite, J. Phys. Chem. Lett. 2015, 6, 1729–1735

180. D. H. Kim, G. S. Han, W. M. Seong, J.-W. Lee, B. J. Kim, N.-G. Park, K. S. Hong, S. Lee, and H. S. Jung, Niobium Doping Effects on TiO2 Mesoscopic ElectronTransport Layer-Based Perovskite Solar Cells, ChemSusChem 2015, 8, 2392-2398

179. D.-J. Seol, J.-W. Lee, and N.-G. Park, On the Role of Interfaces in Planar-Structured HC(NH2)2PbI3 Perovskite Solar Cells, ChemSusChem 2015, 8, 2414-2419

178. H.-S. Ko, J.-W. Lee, and N.-G. Park, 15.76% Efficiency Perovskite Solar Cell Prepared under High Relative Humidity: Importance of PbI2 Morphology in Two-Step Deposition of CH3NH3PbI3, J. Mater. Chem. A 2015, 3, 8808-8815

177. J.-H. Im, J. Luo, M. Franckevicius, N. Pellet, P. Gao, T. Moehl, S. M. Zakeeruddin, M. K. Nazeeruddin, M. Gratzel, and N.-G. Park, Nanowire Perovskite Solar Cell, Nano Lett. 2015, 15, 2120-2126

176. L. Bertoluzzi, R. S. Sanchez, L. Liu, J.-W. Lee, E. M.-Marza, H. Han, N.-G. Park, I. M.-Sero, and J. Bisquert, Cooperative kinetics of depolarization in CH3NH3PbI3 perovskite solar cells, Energy Environ. Sci. 2015, 8, 910-915

175. H. Uzu, M. Ichikawa, M. Hino, K. Nakano, T. Meguro, J. L. H. andez, H.-S. Kim, N.-G. Park, and K. Yamamoto, High efficiency solar cells combining a perovskite and a silicon heterojunction solar cells via an optical splitting system, Appl. Phys. Lett. 2015, 106, 013506

174. H. S. Jung, and N.-G. Park, Perovskite Solar Cells: From Materials to Devices, Small 2015, 11, 10-25

173. N.-G. Park, Perovskite solar cells : Switchable photovoltaics, Nature Mater. 2015, 14, 140-141

172. J.-W. Lee, S. H. Lee, H.-S. Ko, J. Kwon, J. H. Park, S. M. Kang, N. Ahn, M. Choi, J. K. Kim, and N.-G. Park, Opto-electronic Property of TiO2 Nanohelices-embedded HC(NH2)2PbI3 Perovskite Solar Cells, J. Mater. Chem. A 2015, 3, 9179-9186

171. G. S. Han, H. S. Chung, B. J. Kim, d. H. Kim, J.-W. Lee, B. S. Swain, K. Mahmood, J. S. Yu, N.-G. Park, J. H. Lee, and H. S. Jung, Retarding Charge Recombination in Perovskite Solar Cells Using Ultrathin MgO-coated TiO2 Nanoparticulate Films, J. Mater. Chem. A 2015, 3, 9160-9164

170. H.-W. Kang, J.-W. Lee, and N.-G. Park, Effect of Double Blocking Layers at TiO2/Sb2S3 and Sb2S3/spiro-MeOTAD Interfaces on Photovoltaic Performance, Faraday Discuss 2015, 176, 287-299

169. N.-G. Park, Perovskite solar cells: an emerging photovoltaic technology, Mater. Today 2015, 15, 65-72

2014

168. M. S. A. S. Shah, W.-J. Kim, J. Park, D. K. Rhee, I.-H. Jang, N.-G. Park, J. Y. Lee, and P. J. Yoo, Highly Efficient and Recyclable Nanocomplexed Photocatalysts of AgBr/N-Doped and Amine-Functionalized Reduced Graphene Oxide, ACS Appl. Mater. Interfaces 2014, 6 (23), pp 20819–20827

167. T. I. Ryu, Y. Yoon, J.-H. Kim, D.-H. Hwang, M. J. Ko, D.-K. Lee, J. Y. Kim, H. Kim, N.-G. Park, B. S. Kim, and H. J. Son, Simultaneous Enhancement of Solar Cell Efficiency and Photostability via Chemical Tuning of Electron Donating Units in Diketopyrrolopyrrole-Based Push-Pull Type Polymers, Macromolecules 2014, 47, 6270-6280

166. T. Moehl, J.-H. Im, Y. H. Lee, K. Domanski, F. Giordano, S. M. Zakeeruddin , M. I. Dar, L.-P. Heiniger, M. K. Nazeeruddin, N.-G. Park, and M. Gratzel, Strong Photocurrent Amplification in Perovskite Solar Cells with a Porous TiO2 Blocking Layer under Reverse Bias, J. Phys. Chem. Lett. 2014, 5, 3931-3936

165. S. M. Kang, N. Ahn, J.-W. Lee, M. Choi, and N.-G. Park, Water-Repellent Perovskite Solar Cell, J. Mater. Chem. A 2014, 2, 20017-20021

164. L. S. Oh, D. H. Kim, J. A. Lee, S. S. Shin, J.-W. Lee, I. J. Park, M. J. Ko, N.-G. Park, S. G. Pyo, K. S. Hong, and J. Y. Kim, Zn2SnO4-Based Photoelectrodes for Organolead Halide Perovskite Solar Cells, J. Phys. Chem. C 2014, 118, 22991-22994

163. J.-H. Yum, J.-W. Lee, Y. Kim, R. H.-Baker, N.-G. Park, and M. Gratzel, Panchromatic light harvesting by dye- and quantum dot-sensitized solar cells, Sol. Energy 2014, 109, 183-188

162. J. Luo, J.-H. Im, M. T. Mayer, M. Schreier, M. K. Nazeeruddin, N.-G. Park, S. D. Tilley, H. J. Fan, and M. Gratzel, Water photolysis at 12.3% efficiency via perovskite photovoltaics and Earth-abundant catalysts, Science 2014, 26, 1593-1596

161. J.-H. Im, I.-H. Jang, N. Pellet, M. Gratzel, and N.-G. Park, Growth of CH3NH3PbI3 cuboids with controlled size for high-efficiency perovskite solar cells, Nat. Nanotechnol 2014, 9, 927-932

160. H.-S. Kim, and N.-G. Park, Parameters Affecting I-V Hysteresis of CH3NH3PbI3 Perovskite Solar Cells: Effects of Perovskite Crystal Size and Mesoporous TiO2 Layer, J. Phys. Chem. Lett. 2014, 5, 2927-2934

159. J.-H. Im, H.-S. Kim, and N.-G. Park, Morphology-photovoltaic property correlation in perovskite solar cells: One-step versus two-step deposition of CH3NH3PbI3, APL Mater. 2014, 2, 081510

158. G. S. Han, S. Lee, J. H. Noh, H. S. Chung, J. H. Park, B. S. Swain, J.-H. Im, N.-G. Park, and H. S. Jung, 3-D TiO2 nanoparticle/ITO nanowire nanocomposite antenna for efficient charge collection in solid state dye-sensitized solar cells, Nanoscale 2014, 6, 6127-6132

157. M. Gratzel, and N.-G. Park, Organometal Halide Perovskite Photovoltaics: a Diamond in the Rough, NANO 2014, 09, 1440002

156. R. S. Sanchez, V. G.-Pedro, J.-W. Lee, N.-G. Park, Y. S. Kang, I. M.-Sero, and J. Bisquert, Slow Dynamic Processes in Lead Halide Perovskite Solar Cells. Characteristic Times and Hysteresis, J. Phys. Chem. Lett. 2014, 5, 2357-2363

155. J.-W. Lee, D.-J. Seol, A.-N. Cho, and N.-G. Park, High-Efficiency Perovskite Solar Cells Based on the Black Polymorph of HC(NH2)2PbI3, Adv. Mater. 2014, 26, 4991-4998

154. J.-W. Lee, S. Park, M. J. Ko, H. J. Son, and N.-G. Park, Enhancement of the Photovoltaic Performance of CH3NH3PbI3 Perovskite Solar Cells through a Dichlorobenzene-Functionalized Hole-Transporting Material, ChemPhysChem 2014, 15, 2595-2603

153. J.-W. Lee, T.-Y. Lee, P. J. Yoo, M. Gratzel, S. Mhaisalkar, and N.-G. Park, Rutile TiO2-based perovskite solar cells, J. Mater. Chem. A 2014, 2, 9251-9259

152. D.-Y. Son, J.-H. Im, H.-S. Kim, and N.-G. Park, 11% Efficient Perovskite Solar Cell Based on ZnO Nanorods: An Effective Charge Collection System, J. Phys. Chem. C 2014, 118, 16567-16573

151. T.-Y. Lee, H.-S. Kim, and N.-G. Park, Evaluation of Limiting Factors Affecting Photovoltaic Performance of Low-Temperature-Processed TiO2 Films in Dye-Sensitized Solar Cells, ChemPhysChem 2014, 15, 1098-1105

150. H.-S. Kim, S. H. Kim, and N.-G. Park, Organolead Halide Perovskite: New Horizons in Solar Cell Research, J. Phys. Chem. C 2014, 118(11), 5615-5625

149. S. Dharani, H. K. Mulmudi, N. Yantara, P. T. T. Trang, N.-G. Park, M. Graetzel, S. Mhaisalkar, N. Mathews, and P. P. Boix, High efficiency electrospun TiO2 nanofiber based hybrid organic-inorganic perovskite solar cell, Nanoscale 2014, 6, 1675-1679

~2013

148. H.-S. Kim, I. M.-Sero, V. G.-Pedro, F. F.-Santiago, E. J. J.-Perez, and N.-G. Park, J. Bisquert, Mechanism of carrier accumulation in perovskite thin-absorber solar cells, Nature Commun. 2013, 4, 2242

147. N.-G. Park, Organometal perovskite light absorbers toward a 20% efficiency low-cost solid-state mesoscopic solar cell, J. Phys. Chem. Lett. 2013, 4, 2423-2429

146. J.-W. Lee, J.-D. Hong, and N.-G. Park, Sixfold enhancement of photocurrent by surface charge controlled high density quantum dot coating, Chem.Commun. 2013, 49, 6448-6450

145. H.-S. Kim, J.-W. Lee, N. Yantara, P. P. Boix, S. A. Kulkarni, S. Mhaisalkar, M. Gratzel, and N.-G. Park, High efficiency solid-state sensitized solar cell-based on submicrometer rutile TiO2 nanorod and CH3NH3PbI3 perovskite sensitizer, Nano Lett. 2013, 13, 2412-2417

144. M. S. A. S. Shah, K. Zhang, A. Reum Park, K. S. Kim, N.-G. Park, J. H. Park, and P. J. Yoo, Single-step solvothermal synthesis of mesoporous Ag-TiO2-reduced graphene oxide ternary composites with enhanced photocatalytic activity, Nanoscale 2013, 5, 5093-5101

143.N. K. Huu, D.-Y. Son, I.-H. Jang, C.-R. Lee, and N.-G. Park, Hierarchical SnO2 nanoparticle-ZnO nanorod photoanode for improving transport and lifetime of photoinjected electrons in dye-sensitized solar cell, ACS Appl. Mater. Interfaces 2013, 5, 1038-1043

142.J.-W. Lee, D.-Y. Son, T. K. Ahn, H.-W. Shin, I. Y. Kim, S.-J. Hwang, M. J. Ko, S. Sul, H. Han, and N.-G. Park, Quantum-dot-sensitized solar cell with unprecedentedly high photocurrent, Sci. Rep. 2013, 3, 1050

141. J.-W. Lee, J.-H. Im, and N.-G. Park, Quantum confinement of CdSe induced by nanoscale solvothermal reaction, Nanoscale 2012, 4, 6642-6648

140. Y. Li, D.-K. Lee, J. Y. Kim, B. Kim, N.-G. Park, K. Kim, J.-H. Shin, I.-S. Choi, and M. J. Ko, Highly durable and flexible dye-sensitized solar cells fabricated on plastic substrates: PVDF-nanofiber-reinforced TiO2 photoelectrodes, Energy Environ. Sci. 2012, 5, 8950-8957

139. K. S. Lee, J. Kwon, J. H. Im, C. R. Lee, N.-G. Park, and J. H. Park, Size-tunable, fast, and facile synthesis of titanium oxide nanotube powders for dye-sensitized solar cells, ACS Appl. Mater. Interfaces 2012, 4(8), 4164-4168

138. J.-H. Im, J. Chung, S.-J. Kim, and N.-G. Park, Synthesis, structure, and photovoltaic property of a nanocrystalline 2H perovskite-type novel sensitizer (CH3CH2NH3)PbI3, Nanoscale Res. Lett. 2012, 7, 353

137. S. Y. Bang, M. J. Ko, K. Kim, J. H. Kim, I.-H. Jang, and N.-G. Park, Evaluation of dye aggregation and effect of deoxycholic acid concentration on photovoltaic performance of N719-sensitized solar cell, Synth. Met. 2012, 162, 1503-1507

136. H.-S. Kim, C.-R. Lee, J.-H. Im, K.-B. Lee, T. Moehl, A. Marchioro, S.-J. Moon, R. Humphry- Baker, J.-H. Yum, J. E. Moser, M. Gratzel, and N.-G. Park, Lead iodide perovskite sensitized all-solid-state submicron thin film mesoscopic solar cell with efficiency exceeding 9%, Sci. Rep. 2012, 2, 591

135. J.-S. Lee, I.-H. Jang, and N.-G. Park, Effect of oxidation state and crystallinity of tungsten oxide interlayer on photovoltaic property in bulk hetero-junction solar cell, J. Phys. Chem. C 2012, 116(25), 13480-13487

134. M.-J. Kim, and N.-G. Park, Urea as a long-term stable alternative to guanidium thiocyanate additive in dye-sensitized solar cell, Appl. Surf. Sci. 2012, 258(22), 8915-8918

133. M.-J. Kim, Y.-J. Yu, J.-H. Kim, Y.-S. Jung, K.-Y. Kay, S.-B. Ko, C.-R. Lee, I.-H. Jang, Y.-U. Kwon, and N.-G. Park, Tuning of spacer groups in organic dyes for efficient inhibition charge recombination in dye-sensitized solar cells, Dyes Pigm. 2012, 95(1), 134-141

132. H.-S. Kim, C.-R. Lee, I.-k Jang, W. Kang, and N.-G. Park, Effect of overlayer thickness of hole transport material on photovoltaic performance in solid-sate dye-sensitized solar cell, Bull. Korean Chem. Soc. 2012, 33(2), 670-674

131. S.-B. Ko, A.-N. Cho, M.-J. Kim, C.-R. Lee, and N.-G. Park, Alkyloxy substituted organic dyes for high voltage dye-sensitized solar cell: Effect of alkyloxy chain length on open-circuit voltage, Dyes Pigm. 2012, 94(1), 88-98

130. H.-S. Kim, S.-B. Ko, I.-H. Jang, and N.-G. Park, Improvement of mass transport of the [Co(bpy)3]II/III redox couple by controlling nanostructure of TiO2 films in dye-sensitized solar cells, Chem. Commun. 2011, 47, 12637-12639

129. S.-R. Jang, K. Zhu, M. J. Ko, K. Kim, C. Kim, N.-G. Park, and A. J. Frank, Voltage-enhancement mechanisms of an organic dye in high open-circuit voltage solid-state dye-sensitized solar cells, ACS Nano 2011, 5(10), 8267-8274

128. J.-H. Im, C.-R. Lee, J.-W. Lee, S.-W. Park, and N.-G. Park, 6.5% efficient perovskite quantum dot-sensitized solar cell, Nanoscale 2011, 3, 4088

127. W.-S. Jeong, J.-W. Lee, S. Jung, J. H. Yun, and N.-G. Park, Evaluation of external quantum efficiency of a 12.35% tandem solar cell comprising dye-sensitized and CIGS solar cells, Sol. Energy Mater. Sol. Cells 2011, 95, 3419

126. A. Anthonysamy, Y. Lee, B. Karunagaran, V. Ganapathy, S.-W. Rhee, S. Karthikeyan, K. S. Kim, M. J. Ko, N.-G. Park, M.-J. Ju, and J. K. Kim, Molecular design and synthesis of ruthenium(ii) sensitizers for highly efficient dye-sensitized solar cells, J. Mater. Chem. 2011, 21, 12389

125. C.-R. Lee, H.-S. Kim, I.-H. Jang, J.-H. Im, and N.-G. Park, Pseudo first-order adsorption kinetics of N719 dye on TiO2 surface, ACS Appl. Mater. Interfaces 2011, 3, 1953-1957

124. A. Mao, N.-G. Park, G. Y. Han, and J. H. Park, Controlled growth of vertically oriented hematite/Pt composite nanorod arrays: use for photoelectrochemical water splitting, Nanotechnology 2011, 22, 175703

123. K. S. Lee, W. J. Lee, N.-G. Park, S. O. Kim, and J. H. Park, Transferred vertically aligned n-doped carbon nanotube arrays: use in dye-sensitized solar cells as counter electrodes, Chem. Commun. 2011, 47, 4264-4266

122. Y. Li, W. Lee, D.-K. Lee, K. Kim, N.-G. Park, and M. J. Ko, Pure anatase TiO2 “nanoglue”: an inorganic binding agent to improve nanoparticle interconnections in the low-temperature sintering of dye-sensitized solar cells, Appl. Phys. Lett. 2011, 98, 103301

121. B. Yoo, K.-J. Kim, Y. H. Kim, K. Kim, M. J. Ko, W. M. Kim, and N.-G. Park, Titanium nitride thin film as a novel charge collector in TCO-less dye-sensitized solar cell, J. Mater. Chem. 2011, 21, 3077-3084

120. C.-R. Lee, H.-S. Kim, and N.-G. Park, Dependence of porosity, charge recombination kinetics and photovoltaic performance on annealing condition of TiO2 films, Front. Optoelectron. China 2011, 4, 59-64

119. S. W. Park, K. Lee, D.-K. Lee, M. J. Ko, N.-G. Park, and K. Kim, Expanding the spectral response of a dye-sensitized solar cell by applying a selective positioning method, Nanotechnology 2011, 22, 45201

118. J.-H. Lee, N.-G. Park, and Y.-J. Shin, Nano-grain SnO2 electrodes for high conversion efficiency SnO2-DSSC, Sol. Energy Mater. Sol. Cells 2011, 95, 179-183

117. J.-H. Lee, W.-S. Chung, N.-G. Park, and K. Kim, Wiper coating method for PEDOT:PSS film on fabricating organic photovoltaic modules, Curr. Appl. Phys. 2010, 10, e185-e188

116. M.-J. Kim, C.-R. Lee, W.-S. Jeong, J.-H. Im, T.-I. Ryu, and N-G. Park, Unusual enhancement of photocurrent by incorporation of Bronsted base thiourea into electrolyte of dye-sensitized solar cell, J. Phys. Chem. C 2010, 114(46), 19849-19852

115. C. Lee, G.-W. Lee, W. Kang, D.-K. Lee, M. J. Ko, K. Kim, and N.-G. Park, Suppression of charge recombination rate in nanocrystalline SnO2 by thin coatings of divalent oxides in dye-sensitized solar cells, Bull. Korean Chem. Soc. 2010, 31(11), 3093-3098

114. S. C. Hong, J. E. Shin, H. J. Choi, H. H. Gong, K. Kim, and N.-G Park, Prediction and evaluation of styrenic block copolymers as surface modifiers for multiwalled carbon nanotubes in α-terpineol-based pastes, Ind. Eng. Chem. Res. 2010, 49(22), 11393-11401

113. B. Yoo, K.-J. Kim, D.-K. Lee, K. Kim, M. J. Ko, Y. H. Kim, W. M. Kim, and N.-G. Park, Method to protect charge recombination in the back-Contact dye-sensitized solar cell, Opt. Express 2010, 18(103), A395-A402

112. K. S. Lee, H. K. Lee, D. H. Wang, N.-G. Park, J. Y. Lee, O. O. Park, and J. H. Park, Dye-sensitized solar cells with Pt- and TCO-free counter electrodes, Chem. Commun. 2010, 46, 4505-4507

111. D. H. Yeon, K. K. Kim, N. G. Park, and Y. S. Cho, Bismuth borosilicate-based thick film passivation of Ag grid for large-area dye-sensitized solar cells, J. Am. Ceram. Soc. 2010, 93(6), 1554-1556

110. H. J. Jo, Y. C. Choi, J.-H. Ryu, J. H. Kang, N. K. Park, D. K. Lee, and J. H. Kim, Synthesis and characterization of organic photo-sensitizers containing multi-acceptors for the application of dye-sensitized solar cells, Mol. Cryst. Liq. Cryst. 2010, 532: 55/[471]-64/[480]

109. B. Yoo, K. Kim, D.-K. Lee, M. J. Ko, H. Lee, Y. H. Kim, W. M. Kim, and N.-G. Park, Enhanced charge collection efficiency by thin-TiO2-film deposition on FTO-coated ITO conductive oxide in dye-sensitized solar cell, J. Mater. Chem. 2010, 20, 4392-4398

108. Y. Li, K. Yoo, D.-K. Lee, J. H. Kim, N.-G. Park, K. Kim, and M. J. Ko, Highly bendable composite photoelectrode prepared from TiO2/polymer blend for low temperature fabricated dye-sensitized solar cells, Curr. Appl. Phys. 2010, 10, e171-e175

107. S. Kim, H. Lim, K. Kim, C. Kim, T. Y. Kang, M. J. Ko, K. Kim, and N.-G. Park, Synthetic strategy of low-bandgap organic sensitizers and their photoelectron injection Characteristics, IEEE J. Sel. Top. Quantum Electron. 2010, 16(6), 1627-1634

106. H. J. Choi, J. E. Shin, G.-W. Lee, N.-G. Park, K. Kim, and S. C. Hong, Effect of surface modification of multi-walled carbon nanotubes on the fabrication and performance of carbon nanotube based counter electrodes for dye-sensitized solar cells, Curr. Appl. Phys. 2010, 10, 165-167

105. C. lee, W. Kang, M. J. Ko, K. Kim, and N.-G. Park, Study on the change in photovoltage by control of cell gap in dye-sensitized solar cells, J. Sol. Energy Eng. 2010, 132, 0211041-0211045

104. N.-G. Park, Light management in dye-sensitized solar cell, Korean J. Chem. Eng. 2010, 27(2), 375-384

103. S. Lee, I.-S. Cho, J. H. Lee, D. H. Kim, D. W. Kim, J. Y. Kim, H. Shin, J.-K. Lee, H. S. Jung, N.-G. Park, K. Kim, M. J. Ko, and K. S. Hong, Two-step sol-gel method -based TiO2 nanoparticles with uniform morphology and size for highly efficient photo-energy conversion devices, Chem. Mater. 2010, 22, 1958-1965,

102. B. Yoo, K.-J. Kim, S.-Y. Bang, M. J. Ko, K. Kim, and N.-G. Park, Chemically deposited blocking layers on FTO substrates: Effect of precursor concentration on photovoltaic performance of dye-sensitized solar cells, J. Electroanal. Chem. 2010, 638, 161-166

101. H. Im, S. Kim, C. Park, S.-H. Jang, C.-J. Kim, K. Kim, N.-G. Park, and C. Kim, High performance organic photosensitizers for dye-sensitized solar cells, Chem. Commun. 2010, 46, 1335-1337

100. G.-W. Lee, D. Kim, M. J. Ko, K. Kim, and N.-G. Park, Evaluation on over photocurrents measured from unmasked dye-sensitized solar cells, Sol. Energy 2010, 84, 418-425

99. Y. J. Kim, H. J. Kim, M. H. Lee, G. I. Lim, H. Y. Song, Y. S. Choi, N.-G. Park, C. Lee, and W. I. Lee, Improvement of photovoltaic efficiency of dye-sensitized solar cell by introducing highly transparent nanoporous TiO2 buffer layer, J. Nanosci. Nanotech. 2010, 1, 340-348

98. W.-S. Chung, H. Lee, W. Lee, M. J. Ko, N.-G. Park, B.-K. Ju, and K. Kim, Solution processed polymer tandem cell utilizing organic layer coated nano-crystalline TiO2 as interlayer, Org. Electron. 2010, 11, 521-528

97. J. H. Koh, J. K. Koh, N.-G. Park, and J. H. Kim, Azide-induced crosslinking of electrolytes and its application in solid-state dye-sensitized solar cells, Sol. Energy Mater. Sol. Cells 2010, 94, 436-441

96. G. Vijayakumar, M. J. Lee, M. Song, S. H. Jin, J.-W. Lee, C. W. Lee, Y. S. Gal, H. J. Shim, Y. Kang, G. W. Lee, K. Kim, N.-G. Park, and S. Kim, New liquid crystal-embedded PVDF-co-HFP-based polymer electrolytes for dye-sensitized solar cell applications, Macromol. Res. 2009, 17, 963-968

95. G-W. Lee, S-Y. Bang, C. Lee, W.-M. Kim, D. Kim, K. Kim, and N.-G. Park, Structural, optical and photoelectrochemical studies on the nanodispersed titania, Curr. Appl. Phys. 2009, 9, 900-906

94. E. S. Kwak, W. Lee, N.-G. Park, J. Kim, and H. Lee, Compact inverse opal electrode using nonaggregated TiO2 nanoparticles for dyesensitized solar cells, Adv. Funct. Mater. 2009, 19, 1093-1099

93. K. Kim, and N.-G. Park, Improvement of electron transport by low temperature chemically-assisted sintering in dye-sensitized solar cell, J. Photochem. Photobiol. A: Chem. 2009, 204, 144-147

92. Y. J. Kim, M. H. Lee, H. J. Kim, G. Lim, Y. S. Choi, N.-G. Park, K. Kim, and W. I. Lee, Formation of highly efficient dye-sensitized solar cells by hierarchical pore generation with nanoporous TiO2 spheres, Adv. Mater. 2009, 21, 1-6

91. K. Lee, S.W. Park, M.J. Ko, K. Kim, and N.-G. Park, Selective positioning of organic dyes in a mesoporous inorganic oxide films, Nat. Mater. 2009, 8, 665-671

90. M.-W. Lee, S.-B. Cha, S.-J. Yang, S. W. Park, K. Kim, N.-G. Park, and D.-H. Lee, Synthesis of organic dyes with linkers between 9,9-dimethylfluorenyl terminal and alpha-cyanoacrylic acid anchor, effect of the linkers on UV-vis absorption spectra, and photovoltaic properties in dye-sensitized solar cells, Bull. Korean Chem. Soc. 2009, 30, 2269-2279

89. M. S. Kang, J. B. Oh, K. D. Seo, H. K. Kim, J. Park, K. Kim, and N.-G. Park, Novel extended pi-conjugated Zn(II)-porphyrin derivatives bearing pendant triphenylamine moiety for dye-sensitized solar cell: synthesis and characterization, J. Porphyr. Phthalocyanines 2009, 13, 798-804

88. J. H. Park, S. Y. Jung, R. Kim, N.-G. Park, J. Kim, and S.-S. Lee, Nanostructured photoelectrode consisting of TiO2 hollow spheres for non-volatile electrolyte-based dye-sensitized solar cells, J. Power Sources 2009, 194, 574-578

87. S. W. Park, K.-I. Son, M. J. Ko, K. Kim, and N.-G. Park, Effect of donor moiety in organic sensitizer on spectral response, electrochemical and photovoltaic properties, Synth. Met. 2009, 159, 2571-2577

86. H.-J. Koo, J. Park, B. Yoo, K. Yoo, K. Kim, and N.-G. Park, Size-dependent scattering efficiency in dye-sensitized solar cell, Inorganica Chim. Acta 2008, 361, 677-683

85. H.-J. Koo, J. Park, B. Yoo, K. Yoo, K. Kim, W. I. Lee, and N.-G. Park, Nano-embossed hollow spherical TiO2 as bifunctional material for high-efficiency dye-sensitized solar cell, Adv. Mater. 2008, 20, 195-199

84. Y. Kim, B. Yoo, R. Vittal, Y. Lee, N.-G. Park, and K.-J. Kim, Low-temperature oxygen plasma treatment of TiO2 film for enhanced performance of dye-sensitized solar cells, J. Power Sources 2008, 175, 914-919

83. H.-J. Koo, C. Kim, K. Kim, and N.-G. Park, Fabrication of heterosensitizer-junction dye-sensitized solar cell, Appl. Phys. Lett. 2008, 92, 142103

82. N.-G. Park, and K. Kim, Transparent solar cells based on dye-sensitized nanocrystalline semiconductors, Physica Status Solidi (a) 2008, 205, 1895-1904

81. J. Y. Kim, T.-H. Kim, D. Y. Kim, N.-G. Park, and K.-D. Ahn, Novel thixotropic gel electrolytes based on dicationic bis-imidazolium salts for quasi-solid-state dye-sensitized solar cells, J. Power Sources 2008, 175, 692-697

80. B. Yoo, K. Kim, S. H. Lee, W. M. Kim, and N.-G. Park, ITO/ATO/TiO2 triple-layered transparent conducting substrates for dye-sensitized solar cells, Sol. Energy Mater. Sol. Cells 2008, 92, 873-877

79. Y. J. Kim, Y. H. Lee, M. H. Lee, H. J. Kim, J. H. Pan, G. I. Lim, Y. S. Choi, K. Kim, N.-G. Park*, C. Lee, and W. I. Lee, Formation of efficient dye-sensitized solar cells by introducing an interfacial layer of long-range ordered mesoporous TiO2 thin film, Langmuir 2008, 24, 13225-13230

78. P. K. Singh, K.-W. Kim, N.-G. Park, and H.-W. Rhee, Mesoporous nanocrystalline TiO2 electrode with ionic liquid-based solid polymer electrolyte for dye-sensitized solar cell application, Synth. Met. 2008, 158, 590-593

77. P. K. Singh, K.-W. Kim, K.-I. Kim, N.-G. Park, and H.-W. Rhee, Nanocrystalline porous TiO2 electrode with ionic liquid impregnated solid polymer electrolyte for dye sensitized solar cells, J. Nanosci. Nanotechnol. 2008, 8(10), 5271-5274

76. P. K. Singh, K.-I. Kim, N.-G. Park, and H.-W. Rhee, Dye sensitized solar cell using polymer electrolytes based on poly(ethylene oxide) with an ionic liquid, Macromol. Symp. 2007, 249-250, 162-166

75. S. Hwang, J. H. Lee, C. Park, H. Lee, C. Kim, C. Park, M.-H. Lee, W. Lee, J. Park, K. Kim, N.-G. Park, and C. Kim, A highly efficient organic sensitizer for dye-sensitized solar cells, Chem. Commun. 2007, 46, 4887-4889

74. Y. J. Shin, J. H. Lee, J. H. Park, and N.-G. Park, Enhanced photovoltaic properties of SiO2-treated ZnO nanocrystalline electrode for dye-sensitized solar cell, Chem. Lett. 2007, 36, 1506-1507

73. J. Park, H. J. Koo, B. Yoo, K. Yoo, K. Kim, W. Choi, and N.-G. Park, On the I-V measurement of dye-sensitized solar cell: Effect of cell geometry on photovoltaic parameters, Sol. Energy Mater. Sol. Cells 2007, 91, 1749-1754

72. S.-M. Paek, H. Jung, Y.-J. Lee, N.-G. Park, S.-J. Hwang, and J.-H. Choy, Nanostructured TiO2 films for dye-sensitized solar cells, J. Phys. Chem. Solids 2006, 67, 1308-1311

71. M. K. Kwang, N.-G. Park, M. G. Kang, K. S. Ryu, and S. H. Chang, Effect of TiO2 inclusion in the poly(vinylidene fluoride-co-hexafluoropropylene)-based polymer electrolyte of dye-sensitized solar cell, Bull. Korean Chem. Soc. 2006, 27, 322-324

70. M. G. Kang, N.-G. Park, K. S. Ryu, S. H. Chang, and K.-J. Kim, A 4.2% efficient flexible dye-sensitized solar cells using stainless steel substrate, Sol. Energy Mater. Sol. Cells 2006, 90, 574-581

69. S. K. Kim, Y.-S. Kang, J.-H. Lee, Y.-J. Shin, N.-G. Park, K. S. Ryu, and S. H. Chang, Photovoltaic properties of nano-particulate and nanorod array ZnO electrodes for dye-sensitized solar cell, Bull. Korean Chem. Soc. 2006, 27, 295-298

68. K. M. Kim, N.-G. Park, K. S. Ryu, and S. H. Chang, Characteristics of PVdF-HFP/TiO2 composite membrane electrolytes prepared by phase inversion and conventional casting methods, Electrochim. Acta 2006, 51, 5636-5644

67. K. M. Kim, N.-G. Park, K. S. Ryu, and S. H. Chang, Physical and electrochemical characterizations of poly(vinylidene fluoride-co-hexafluoropropylene)/SiO2-based polymer electrolytes prepared by the phase-inversion technique, J. Appl. Polym. Sci. 2006, 102, 140-148

66. Y. Kang, N.-G. Park, and D. Kim, Hybrid solar cells with vertically aligned CdTe nanorods and a conjugated polymer, Appl. Phys. Lett. 2005, 86, 113101-113103

65. M.-S. Kang, J. H. Kim, Y. J. Kim, J. Won, N.-G. Park, and Y. S. Kang, Dye-sensitized solar cells based on composite polymer electrolytes, Chem. Commun. 2005, 889-891

64. M. G. Kang, N.-G. Park, K. S. Ryu, S. H. Chang, and K.-J. Kim, Flexible metallic substrates for TiO2 film of dye-sensitized solar cells, Chem. Lett. 2005, 34, 804-805

63. K. S. Ryu, Y.-G. Lee, K. M. Kim, Y. J. Park, Y.-S. Hong, Xi. Wu, M. G. Kang, N.-G. Park, R. Y. Song, and J. M. Ko, Electrochemical capacitor with chemically polymerized conducting polymer based on activated carbon as hybrid electrodes, Synth. Met. 2005, 153, 89-92

62. N.-G. Park, K. M. Kim, M. G. Kang, K. S. Ryu, S. H. Chang, and Y.-J. Shin, Chemical sintering of nanoparticles: A methodology of low-temperature fabrication of dye-sensitized TiO2 films, Adv. Mater. 2005, 17, 2349-2353

61. Y.J. Shin, K.S. Kim, N.-G. Park, K.S. Ryu and S.H. Chang, Enhancement of photovoltaic properties of Ti-modified nanocrystalline ZnO electrode for dye-sensitized solar cell, Bull. Korean Chem. Soc. 2005, 26, 1929-1930

60. N.-G. Park, M. G. Kang, K. S. Ryu, K. M. Kim, and S. H. Chang, Photovoltaic characteristics of dye-sensitized surface-modified nanocrystalline SnO2 solar cells, J. Photochem. Photobiol. A: Chem. 2004, 161, 105-110

59. J.-G. Doh, J. S. Hong, M. G. Kang, N.-G. Park, R. Vittal, and K.-J. Kim, Enhancement of photocurrent and photovoltage of dye-sensitized solar cells with TiO2 film deposited on indium zinc oxide substrate, Chem. Mater. 2004, 16, 493-497

58. N.-G. Park, M. G. Kang, K. M. Kim, K. S. Ryu, S. H. Chang, D.-K. Kim, J. van de Lagemaat, K. Bengkstein, and A. J. Frank, Morphological and photoelectrochemical characterization of core-shell nanoparticle films for dye-sensitized solar cells: Zn-O type shell on SnO2 and TiO2 cores”, Langmuir 2004, 20, 4246-4253

57. S.-G. Kang, K. M. Kim, N.-G. Park, K. S. Ryu, and S.-H. Chang, Factors affecting the electrochemical performance of organic/V2O5 hybrid cathode materials, J. Power Sources 2004, 133, 263-267

56. M. G. Kang, K. M. Kim, K. S. Ryu, S. H. Chang, N.-G. Park, J. S. Hong, and K.-J. Kim, Dye-sensitized TiO2 solar cells using polymer gel electrolytes based on poly(vinylidenefluoride-co-hexafluoropropylene), J. Electrochem. Soc. 2004, 151, E257-E260

55. M. G. Kang, K. S. Ryu, S. H. Chang, N.-G. Park, J. S. Hong, and K.-J. Kim, Dependence of TiO2 film thickness on photocurrent-voltage characteristics of dye-sensitized solar cells, Bull. Korean Chem. Soc. 2004, 25, 742-744

54. J. H. Kim, M.-S. Kang, Y. J. Kim, J. Won, N.-G. Park, and Y. S. Kang, Dye-sensitized nanocrystalline solar cells based on composite polymer electrolytes containing fumed silica nanoparticles, Chem. Commun. 2004, 1662-1663

53. K. S. Ryu, Y.-G. Lee, Y.-S. Hong, Y. J. Park, X. Wu, K. M. Kim, M. G. Kang, N.-G. Park, and S. H. Chang, Poly(ethylenedioxythiophene) (PEDOT) as polymer electrode in redox supercapacitor, Electrochim. Acta 2004, 50, 843-847

52. M. G. Kang, K. S. Ryu, S. H. Chang, and N.-G. Park, New ionic liquid for redox electrolyte of dye-sensitized solar cells, ETRI J. 2004, 26(6), 647-652

51. K. S. Ryu, Y.-G. Lee, K.-S. Han, Y. J. Park, M. G. Kang, N.-G. Park, and S. H. Chang, Electrochemical supercapacitor based on polyaniline doped with lithium salt and active carbon electrodes, Solid State Ion. 2004, 175, 765-768

50. M. G. Kang, N.-G. Park, and S. H. Chang, Manufacturing method of transparent electric window using dye-sensitized TiO2 solar cells, Sol. Energy Mater. Sol. Cells 2003, 75, 475-479

49. K. M. Kim, W. S. Jeon, N.-G. Park, K. S. Ryu, and S. H. Chang, Effect of evaporation temperature on the crystalline properties of solution-cast films of poly(vinylidine fluoride)s, Korean J. Chem. Eng. 2003, 20, 934-941

48. K. M. Kim, W. S. Kim, N.-G. Park, K. S. Ryu, and S. H. Chang, Capacity and cycly performance of practical lithium polymer battery using a commercially available LiNiCoO2, J. Power Sources 2003, 123, 69-74

47. K. M. Kim, J. M. Ko, N.-G. Park, K. S. Ryu, and S. H. Chang, Characterization of poly(vinylidenefluoride-co-hexafluoropropylene)-based polymer electrolyte filled with rutile TiO2 nanoparticles, Solid State Ion. 2003,161, 121-131

46. N.-G. Park, J. van de Lagemaat, and A. J. Frank, Effect of morphology on electron transport in dye-sensitized nanostructured TiO2 films, J. Photoscience 2003, 10, 199-202

45. K. S. Ryu, N.-G. Park, K. M. Kim, Y. G. Lee, Y. J. Park, S. J. Lee, C. K. Jeong, J. Joo and S. H. Chang, The physicochemical properties of polyindole/thiol composites, Synth. Met. 2003, 135-136, 397-398,

44. N.-G. Park, K M Kim, K S Ryu, Y J Park, M G Kang, D-K Kim, S-G Kang, and S-H Chang, Synthesis and electrochemical properties of V2O5 intercalated with binary polymers, J. Power Sources 2002, 103, 273-279

43. K. S. Ryu, K. M. Kim, Y. J. Park, N.-G. Park, and S. H. Chang, Symmetric redox supercapacitor with conducting polyaniline electrodes, J. Power Sources 2002, 103, 305-309

42. K. Zhu, E. A. Schiff, N.-G. Park, J. van de Lagemaat, and A. J. Frank, Determining the locus for photocarrier recombination in dye-sensitized solar cells, Appl. Phys. Lett. 2002, 80, 685-687

41. M. G. Kang, N.-G. Park, S. H. Chang, S. H. Choi, and K.-J. Kim, Enhanced photocurrent of Ru(II)-dye sensitized solar cells by incorporation of titanium silicalite-2 in TiO2 film, Bull. Korean Chem. Soc. 2002, 23, 140-142

40. Y. J. Park, K. S. Ryu, N.-G. Park, Y.-S. Hong, and S. H. Chang, Rf-sputtered vanadium oxide films: effect of film thickness on structural and electrochemical properties, J. Electrochem. Soc. 2002, 149, A597-602

39. K. M. Kim, N.-G. Park, K. S. Ryu, and S. H. Chang, Characterization of poly(vinylidenefluoride-co-hexafluoropropylene)-based polymer electrolyte filled with TiO2 nanoparticles, Polymer 2002, 43, 3951-3957

38. J.-H. Choy, N.-G. Park, J. B. Yoon, and H. Jung, A new intercalation complex, C60(C2H8N2)6-FeOCl, Bull. Korean Chem. Soc. 2002, 23, 1191-1192

37. K.S. Ryu, K.M. Kim, Y.J. Park, N.-G. Park, M.G. Kang, and S.H. Chang, Redox supercapacitor using polyaniline doped with Li salt as electrode, Solid State Ion. 2002, 152-153, 861-866

36. Y.J. Park, K.S. Ryu, K. M. Kim, N.-G. Park, M. G. Kang, and S.H. Chang, Electrochemical properties of vanadium oxide thin film deposited by RF sputtering, Solid State Ion. 2002, 154-155, 229-235

35. S.-H. Lee, H M Cheong, N.-G. Park, C.E. Tracy, A. Mascarenhas, D.K. Benson, and S.K. Deb, Raman spectroscopic studies of Ni-W oxide films, Solid State Ion. 2001, 140, 135-139

34. K.S. Ryu, K.M. Kim, N.-G. Park, Y.J. Park,J.H. Jeong, J. Joo, and S.H. Chang, A new approach to preparing highly conducting polyaniline films, Synth. Met. 2001, 119, 355-356

33. N.-G. Park, S. H. Chang, and K. M. Kim, Sonochemical synthesis of the high energy density cathode material VOPO4 2H2O, Electrochem. Commun. 2001, 3, 553-556

32. Y. J. Park, N.-G. Park, K. S. Ryu, S. H. Chang, S.-C. Park, S.-M. Yoon, and D.-K. Kim, RF-sputtered vanadium oxide thin films: effect of oxygen partial pressure on structural and electrochemical properties, Bull. Korean Chem. Soc. 2001, 22, 1015-1018

31. J. van de Lagemaat, N.-G. Park, and A. J. Frank, Influence of electrical potential distribution, charge transport, and recombination on the photopotential and photocurrent conversion efficiency of the dye-sensitized nanocrystalline TiO2 solar cells: A study by electrical impedance and optical modulation techniques, J. Phys. Chem. B 2000, 104, 2044-2052

30. N. Kopidakis, E. A. Schiff, N.-G. Park, J. van de Lagemaat, and A.J. Frank, Ambipolar diffusion of photocarriers in electrolyte-filled nanoporous TiO2, J. Phys. Chem. B 2000, 104, 3930-3936

29. J.-H. Choy, Y.-I. Kim, B.-W Kim, N.-G. Park, G. Campet, and J.-C. Grenier, New solution route to electrochromic polyacrylic acid/WO3 hybrid film, Chem. Mater. 2000, 12, 2950-2956

28. N.-G. Park, J. van de Lagemaat, and A. J. Frank, Comparison of dye-sensitized rutile- and anatase-based TiO2 solar cells, J. Phys. Chem. B 2000, 104, 8989-8994

27. N.-G. Park, S. H. Chang, J. van de Lagemaat, K.J. Kim, and A. J. Frank, Effect of cations on the open-circuit photovoltage and the charge-injection efficiency of dye-sensitized nanocrystalline rutile TiO2 films, Bull. Korean Chem. Soc. 2000, 21, 985-988

26. G. Schlichthorl, N.-G. Park, and A. J. Frank, Evaluation of the charge-collection efficiency of dye-sensitized nanocrystalline TiO2 solar cell, J. Phys Chem. B 1999, 103, 782-791

25. N.-G. Park*, G. Schlichtorl, J. van de Lagemaat, H. M. Cheong, A. Mascarenhas, and A. J. Frank, Dye-sensitized TiO2 solar cells: structural and photoelectrochemical characterization of nanocrystalline electrodes formed from the hydrolysis of TiCl4, J. Phys. Chem. B 1999, 103, 3308-3314

24. M.A. Ibrahim, B.-G. Lee, N.-G. Park, J.R. Pugh, D.D. Eberl, and A.J. Frank, Synthesis of new oligothiophene derivatives and their intercalation compounds: orientation effects, Synth. Met. 1999, 105, 35-42

23. G. Schlichthorl, N.-G. Park, and A.J. Frank, Estimation of the charge-collection efficiency of dye-sensitized nanocrystalline TiO2 solar cells, J. Phys. Chem. 1999, 212, 45-50

22. S.K. Deb, R. Ellingson, S. Ferrere, A.J. Frank, B.A. Gregg, A.J. Nozik, and N.-G. Park, G. Schlichthrol, A. Zaban, Photochemical solar cell based on dye-sensitization of nanocrystalline TiO2, AIP Conf. Proc. 1999, 462, 473-482

21. S.-J. Hwang, N.-G. Park, D.-H. Kim, and J.-H. Choy, Charge transfer-Tc relation in superconducting intercalates IBi2Sr2CaCu2Oy, J. Solid State Chem. 1998, 138, 66-73

20. N.-G. Park, B.W Kim, A. Poquet, G. Campet, J. Portier, J.-H. Choy, and Y.-I. l Kim, A new and simple method for manufacturing electrochromic tungsten oxide films, Active Passive Elec. Comp. 1998, 20, 125-133

19. N.-G. Park, A. Poquet, G. Campet, J. Portier, J.-H. Choy, Y.-I. Kim, D. Camino, and J. Salardenne, Development of electrochromic devices working with hydrophobic lithium electrolyte, Active Passive Elec. Comp. 1998, 20, 201-213

18. J.-H. Choy, S.-J. Hwang, and N.-G. Park, Interacrystalline structure of molecular mercury halide intercalated in high-tc superconducting lattice of Bi2Sr2CaCu2Oy, J. Am. Chem. Soc. 1997, 119, 1624-1633

17. J.-H. Choy, N.-G. Park, J.-B. Yoon, K.-S. Han, and S.-H. Chang, The effect of lithium intercalation on the crystal structure and magnetic property of layered FeWO4Cl, Jpn. J. Appl. Phys. 1997, 36, 2656-2660

16. J.-H. Choy, J.-B. Yoon, N.-G. Park, Y.-I Kim and K.-S. Han, X-ray absorption spectroscopic studies on layered FeWO4Cl and its lithium intercalates, Jpn. J. Appl. Phys. 1997, 36, 5605-5609

15. Y.-I. Kim, B.-W. Kim, J.-H. Choy, G. Campet, N.-G. Park, J. Portier, and B. Morel, RF sputtered lithium nickel oxide films and their electrochromism, J. Korean Chem. Soc. 1997, 41, 594-599

14. J.-H. Choy, N.-G. Park, S.-J. Hwang, and Z.G. Khim, Evolution of superconducting transition temperature (Tc) upon HgBr2 intercalation into Bi2Sr1.5-xLaxCa1.5Cu2Oy, J. Phys. Chem. 1996, 100, 3783

13. N.-G. Park, S.-W. Cho, S.-J. Kim and J.-H. Choy, X-ray absorption near edge structure (XANES) of the iodine intercalated C60: evidence of I2d+ in I2C60, Chem. Mater. 1996, 8, 324-326

12. M.-K. Bae, M.-S. Kim, S.-I. Lee, N.-G. Park, S.-J. Hwang, D.-H. Kim, and J.-H. Choy, Effect of HgI2 intercalation on Bi2Sr2CaCu2Oy: interlayer coupling effect, Phys. Rev. B 1996, 53, 12416-12421

11. J.-H. Choy, N.-G. Park, S.-J. Hwang, S.-H. Hwang, and D.-H. Kim, X-ray absorption spectroscopic study of new high-Tc superconducting intercalation compounds of (HgX2)0.5Bi2Sr2CaCu2Oy (X=Br, I), Proc. SPIE 1996, 2696, 636-641

10. J.-H. Choy, Y.-I. Kim, N.-G. Park, and S.-H. Hwang, Nano-engineering via intercalation: layer-by-layer interstratification of high-Tc superconducting and superionic materials, AgxIwBi2Sr2Can-1CunO2n+4 (n=1, 2, 3), Proc. SPIE 1996, 2697, 403-412

9. J.-H. Choy, N.-G. Park, Y.-I. Kim, S.-H. Hwang, J.-S. Lee, and H.-I. Yoo, Molecular layer-by-layer engineering of superconducting and superionic materials in the (AgI)Bi2Sr2CaCu2Oy system, J. Phys. Chem. 1995, 99, 7845-7848

8. J.-H. Choy, S.-T. Hong, N.-G. Park, S.-H. Byeon, and G. Demazeau, Pressure dependence of the oxidation state of manganese and magnetic property of CaLaMgMnO6-x, Bull. Korean Chem. Soc. 1995, 16, 105-110

7. J.-H. Choy, N.-G. Park, S.-J. Hwang, and Y.-I Kim, A new high-tc superconducting intercalation compound, Synth. Met. 1995, 71, 1551-1553

6. J.-H. Choy, N.-G. Park, and D.-Y. Noh, A new 2-dimensional magnetic model for the layered compounds of FeMO4Cl (M=Mo and W) with strong interlayer coupling, Synth. Met. 1995, 71, 2055-2056

5. J.-H. Choy, Y.-S. Han, N.-G. Park, H. Kim, and S.-W. Kim, N-alkylammonium intercalated 2-d titanates and their thermotropic phase transition, Synth. Met. 1995, 71, 2053-2054

4. J.-H. Choy, N.-G. Park, S.-H. Chang, and H.-H. Park, Electronic structure of iron and molybdenum in Li2FeMoO4Cl and its crystal symmetry, J. Korean Chem. Soc. 1995, 39, 446-452

3. J.-H. Choy, N.-G. Park, Y.-I. Kim, and Chy-Hyung Kim, New mixed nanocomposites, (AgI)xBi2Sr2CaCu2Oy, Eur. J. Solid State Inorg. Chem. 1995, 32, 701-709

2. J.-H. Choy, N.-G. Park, S.-J. Hwang, D.-H. Kim, and N.H. Hur, New superconducting intercalation compounds: (HgX2)0.5Bi2Sr2CaCu2Oy (X=Br and I), J. Am. Chem. Soc. 1994, 116, 11564-11565

1. J.-H. Choy, D.-K. Kim, N.-G. Park, D.-H. Kim, S.-J. Hwang, S.-H. Hwang, and N.H. Hur, XANES and EXAFS studies on a new superconducting intercalation compound, AgIBi2Sr2CaCu2Oy, Physica C 1994, 235-240, 1023-1024