[21a-432-1~12] 12.5 Organic solar cells

[21a-432-2] Effect of ion irradiation on the properties of lead halide perovskite films

〇Hironori Ogata^1,2,3, Tomoaki Nishimura³, Takamasa Takeuchi¹, Hiroya Kuichi¹, Kazunori Ito¹, Toshiya Kobayashi¹, Masato Gocyo¹, Yuki Fukazawa¹ (1.Grad.School. Sci. and Engin., Hosei Univ., 2.Res. Center Micro-Nano, Hosei Univ., 3.Center of Ion Beam Tech., Hosei Univ.)

Keywords:Perovskite Solar Cells, Ion irradiation, Defect structures

Perovskite solar cells are an important photovoltaic technology with high efficiencies exceeding 20% due to their optimal band gap, large absorption coefficient, and high charge mobilities. One of these challenges is the understanding and control of their defect structures because perovskite compounds are relatively soft ionic crystals and ions are migrating in the crystals relatively low activation energy. In this study, we have investigated the effect of low energy halide ion irradiation to both all inorganic and organic-inorganic lead halide perovskite films on the structure, morophology optical and electronic properties systematically.