[14a-A41-1~11] 12.5 Organic solar cells

△ [14a-A41-8] Effects of Metal Oxide Scaffold Surface Structure on Optoelectric Properties of Organometal Halide Perovskite Crystals

〇Akito Tateyama¹, Masato Maitani^1,2, Shuntaro Tsubaki¹, Yuji Wada¹ (1.Tokyo Tech., 2.The Univ. Tokyo)

Keywords:perovskite solar cell, metal oxide, interface

A photovoltaic cell using the organic-inorganic hybrid semiconductor with perovskite crystal has achieved high conversion efficiency (> 20 %) because of high optical absorption coefficient and outstanding photoelectronic properties. In order to improve the conversion efficiency of perovskite solar cell, it is important to improve the electron injection and crystalline properties of perovskite by controlling the interface between perovskite and metal oxide. In this study, we deposit perovskite crystal on single crystalline substrates of metal oxide. The presentation focuses on the surface structure including crystalline orientation, and therefore examine the effects of surface of metal oxide on the photoelectric properties of organometal halide perovskite crystals.