| Cd-Free Cu(In,Ga)(Se,S)2 Thin-Film Solar Cell With Record Efficiency of 23.35% M Nakamura, K Yamaguchi, Y Kimoto, Y Yasaki, T Kato, H Sugimoto IEEE Journal of Photovoltaics 9 (6), 1863-1867, 2019 | 1133 | 2019 |
| High-performance perovskite/Cu (In, Ga) Se2 monolithic tandem solar cells Q Han, YT Hsieh, L Meng, JL Wu, P Sun, EP Yao, SY Chang, SH Bae, ... Science 361 (6405), 904-908, 2018 | 371 | 2018 |
| Record Efficiency for Thin-Film Polycrystalline Solar Cells Up to 22.9% Achieved by Cs-Treated Cu(In,Ga)(Se,S)2 T Kato, JL Wu, Y Hirai, H Sugimoto, V Bermudez IEEE Journal of Photovoltaics 9 (1), 325-330, 2018 | 328 | 2018 |
| New world record Cu(In, Ga)(Se, S)2thin film solar cell efficiency beyond 22% R Kamada, T Yagioka, S Adachi, A Handa, KF Tai, T Kato, H Sugimoto 2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC), 1287-1291, 2016 | 237 | 2016 |
| Cu (In, Ga)(Se, S) 2 solar cell research in Solar Frontier: Progress and current status T Kato Japanese Journal of Applied Physics 56 (4S), 04CA02, 2017 | 209 | 2017 |
| Enhanced efficiency of Cd-free Cu (In, Ga)(Se, S) 2 minimodule via (Zn, Mg) O second buffer layer and alkali metal post-treatment T Kato, A Handa, T Yagioka, T Matsuura, K Yamamoto, S Higashi, JL Wu, ... IEEE journal of photovoltaics 7 (6), 1773-1780, 2017 | 116 | 2017 |
| Characterization of front and back interfaces on Cu2ZnSnS4 thin-film solar cells T Kato, H Hiroi, N Sakai, S Muraoka, H Sugimoto Proc. of the 27th EU-PVSEC 2236, 2012 | 110 | 2012 |
| High voltage Cu2ZnSnS4 submodules by hybrid buffer layer H Hiroi, N Sakai, T Kato, H Sugimoto 2013 IEEE 39th Photovoltaic Specialists Conference (PVSC), 0863-0866, 2013 | 98 | 2013 |
| From 20.9 to 22.3% Cu (In, Ga)(S, Se) 2 solar cell: Reduced recombination rate at the heterojunction and the depletion region due to K-treatment KF Tai, R Kamada, T Yagioka, T Kato, H Sugimoto Japanese Journal of Applied Physics 56 (8S2), 08MC03, 2017 | 95 | 2017 |
| Local density of states and superconducting gap in the iron chalcogenide superconductor Fe 1+ δ Se 1− x Te x observed by scanning tunneling spectroscopy T Kato, Y Mizuguchi, H Nakamura, T Machida, H Sakata, Y Takano Physical Review B 80 (18), 180507, 2009 | 95 | 2009 |
| Impacts of surface sulfurization on Cu(In1−x,Gax)Se2 thin‐film solar cells T Kobayashi, H Yamaguchi, Z Jehl Li Kao, H Sugimoto, T Kato, H Hakuma, ... Progress in Photovoltaics: Research and Applications 23 (10), 1367-1374, 2015 | 61 | 2015 |
| A comparative study of Cd‐ and Zn‐compound buffer layers on Cu(In1−x,Gax)(Sy,Se1−y)2 thin film solar cells T Kobayashi, Z Jehl Li Kao, T Kato, H Sugimoto, T Nakada Progress in Photovoltaics: Research and Applications 24 (3), 389-396, 2016 | 59 | 2016 |
| Development of high performance Ag sheathed Bi2223 wire T Kato, S Kobayashi, K Yamazaki, K Ohkura, M Ueyama, N Ayai, ... Physica C: Superconductivity 412, 1066-1072, 2004 | 59 | 2004 |
| Inhomogeneous electronic states of probed by scanning tunneling spectroscopy T Kato, S Okitsu, H Sakata Physical Review B 72 (14), 144518, 2005 | 56 | 2005 |
| 20% Efficient Zn0.9Mg0.1O:Al/Zn0.8Mg0.2O/Cu(In,Ga)(S,Se)2 Solar Cell Prepared by All-Dry Process through a Combination of Heat-Light-Soaking and Light … J Chantana, T Kato, H Sugimoto, T Minemoto ACS applied materials & interfaces 10 (13), 11361-11368, 2018 | 50 | 2018 |
| Appearance of new energy gap and periodic local density-of-states modulation in Bi2Sr1. 6La0. 4CuO6+ δ T Machida, Y Kamijo, K Harada, T Noguchi, R Saito, T Kato, H Sakata Journal of the Physical Society of Japan 75 (8), 083708-083708, 2006 | 48 | 2006 |
| Recent R&D progress in solar frontier's small-sized Cu(InGa)(SeS)2 solar cells M Nakamura, N Yoneyama, K Horiguchi, Y Iwata, K Yamaguchi, ... 2014 IEEE 40th Photovoltaic Specialist Conference (PVSC), 0107-0110, 2014 | 47 | 2014 |
| Thin‐film Cu(In,Ga)(Se,S)2‐based solar cell with (Cd,Zn)S buffer layer and Zn1−xMgxO window layer J Chantana, T Kato, H Sugimoto, T Minemoto Progress in Photovoltaics: Research and Applications 25 (6), 431-440, 2017 | 46 | 2017 |
| Sputtered (Zn, Mg) O buffer layer for band offset control in Cu2ZnSn (S, Se) 4 solar cells D Hironiwa, N Matsuo, N Sakai, T Katou, H Sugimoto, J Chantana, Z Tang, ... Japanese Journal of Applied Physics 53 (10), 106502, 2014 | 42 | 2014 |
| Lifetime improvement for high efficiency Cu2ZnSnS4 submodules H Sugimoto, C Liao, H Hiroi, N Sakai, T Kato 2013 IEEE 39th Photovoltaic Specialists Conference (PVSC), 3208-3211, 2013 | 42 | 2013 |
