Planar heterojunction perovskite solar cells fabricated by wet process

Tetsuya Taima; Kohei Yamamoto; Md. Shahiduzzaman; Yoshikazu Furumoto; Takayuki Kuwabara; Kohshin Takahashi

doi:10.1117/12.2257204

16 February 2017 Planar heterojunction perovskite solar cells fabricated by wet process

Tetsuya Taima, Kohei Yamamoto, Md. Shahiduzzaman, Yoshikazu Furumoto, Takayuki Kuwabara, Kohshin Takahashi

Proceedings Volume 10101, Organic Photonic Materials and Devices XIX; 101010M (2017) https://doi.org/10.1117/12.2257204
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

Organic-inorganic hybrid perovskite materials have been recently emerged as a promising cost- and energy efficient light absorber material for photovoltaic applications. Unfortunately, perovskite solar cells have a problem with decreacement of power conversion efficiency due to degradation in the air. To detect the reason of degradation on perovskite solar cells, we exposed deposited CH₃NH₃PbI₃ and HC(NH₂)₂PbI₃ films to the O₂ or (H₂O+N₂) atmosphere condition. Analysis of the film revealed that the large energy band gap was shown due to influence of H₂O molecule in CH₃NH₃PbI₃ and HC(NH₂)₂PbI₃. In (H₂O+N₂) atmosphere conditions, the existence of CH₃NH₃I and HC(NH₂)₂I molecule has found to affect the morphology, absorption and as well as crystalline diffraction peak. The resultant perovskite crystalline structure was degraded by H₂O molecules in the air exposure condition.

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Citation Download Citation

Tetsuya Taima, Kohei Yamamoto, Md. Shahiduzzaman, Yoshikazu Furumoto, Takayuki Kuwabara, and Kohshin Takahashi "Planar heterojunction perovskite solar cells fabricated by wet process", Proc. SPIE 10101, Organic Photonic Materials and Devices XIX, 101010M (16 February 2017); https://doi.org/10.1117/12.2257204

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