Studies on Organometal Halide Perovskite Solar Cells

This project aims at putting into practical use of "the perovskite solar cells" which are seen as the candidate material of innovative low cost solar cell. The organometal halide perovskites have gained much interest as a promising material for low-cost and high-efficiency solar cells. The power conversion efficiency of the organometal halide perovskite solar cells (PSCs) has reached 22% within a few years of its invention, which is comparable to those of polycrystalline Si solar cells, CdTe solar cells, and CIGS solar cells. However, for the practical use of PSCs, many problems remain, including the reliability of its performance under high efficiency pile to make large cells. In this study, the fundamental researches of new structure and new concept targeting 20% of energy conversion efficiencies and module production cost of 15 yen/W, have been conducted by the integrated laboratory through cooperation with the industry, government, and university.

- Prof Satoshi Uchida
- Associate Prof Jotaro Nakazaki
- Associate Prof Takeru Bessho

- Hysteresis-free Perovskite Solar Cells Made of Potassium-doped Organometal Halide Perovskite, Zeguo TANG, Takeru BESSHO, Fumiyasu AWAI, Takumi KINOSHITA, Masato M. MAITANI, Ryota JONO, Takurou N. MURAKAMI, Haibin WANG, Takaya KUBO, Satoshi UCHIDA, Hiroshi SEGAWA Scientific Reports 2017, 7, 12183. DOI: 10.1038/s41598-017-12436-x
- Determination of Unique Power Conversion Efficiency of Solar Cell Showing Hysteresis in the I-V Curve Under Various Light Intensities, Ludmila COJOCARU, Satoshi UCHIDA, Koichi TAMAKI, Piyankarage V. V. JAYAWEERA, Shoji KANEKO, Jotaro NAKAZAKI, Takaya KUBO, Hiroshi SEGAWA, Scientific Reports 2017, 7, 11790. DOI: 10.1038/s41598-017-10953-3
- Direct Confirmation of Distribution for Cl- in CH3NH3PbI3-xClx Layer of Perovskite Solar Cells, Ludmila COJOCARU, Satoshi UCHIDA, Daiki MATSUBARA, Hiroaki MATSUMOTO, Katsuji ITO, Yoshihiro OTSU, Patrik CHAPON, Jotaro NAKAZAKI, Takaya KUBO, Hiroshi SEGAWA Chemistry Letters 2016, 45(8), 884-886. DOI: 10.1246/cl.160436
- Spectral Splitting Photovoltaics using Perovskite and Wideband Dye-Sensitized Solar Cells, Takumi KINOSHITA, Kazuteru NONOMURA, Nam Joong JEON, Fabrizio GIORDANO, Antonio ABATE, Satoshi UCHIDA, Takaya KUBO, Sang Il SEOK, Mohammad Khaja NAZEERUDDIN, Anders HAGFELDT, Michael GRATZEL, Hiroshi SEGAWA Nature Communications 2015, 6, 8834. DOI: 10.1038/ncomms9834

- Patent application 2017-93656