[19p-E101-1~14] 12.5 Organic solar cells

[19p-E101-12] Effect of ion irradiation on the properties of lead halide perovskite films (III)

〇Hironori Ogata^1,2,3, Tomoaki Nishimura³, Kazunori Ito¹, Toshiya Kobayashi¹, Masato Gocho¹, Yuki Fukazawa¹, Ryusuke Umeda¹ (1.Grad. Sch. Sci. Tech., Hosei Univ., 2.Research Center for Micro-Nano Tech. Hosei Univ., 3.Center of Ion Beam Tech., Hosei Univ.)

Keywords:perovskite solar cells, ion irradiation

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.We have been investigated the influence of low energy ion irradiation on lead halide perovskite compound thin films on the structure, optical properties and electronic properties of the thin films. In this study, we have measured Raman spectra for ion irradiated perovskite films in order to clarify defects induced by ion irradiation and its dynamic behavior in perovskite thin films. Detailed analysis results will be reported.
both all inorganic and organic-inorganic lead halide perovskite films on the structure, morophology optical, electronic properties and photovoltaic properties systematically.