[20p-P02-1~19] 12.5 Organic solar cells

[20p-P02-18] Br Mixing Ratio Dependence on Energy Band Structure and Crystal Orientation of Mixed Halogen Perovskite MAPbI_3-xBr_x

〇Genya Uzurano¹, Kentaro Abe¹, Tomoki Saito¹, Akihiko Fujii¹, Masanori Ozaki¹ (1.Osaka Univ.)

Keywords:perovskite solar cell, two dimensional perovskite

To achieve efficient hole transport properties in 2D/3D perovskite heterostructures solar cells, energy band control was investigated by substituting the portion of iodin by bromine of MAPbI₃. The effect of Br substitution on the crystal orientation of MAPbI₃ was also evaluated. VBM of MAPbI_3-xBr_x was controlled between -5.45 eV and -5.68 eV with no orientation change from (200)/(112)-oriented MAPbI₃.