[11a-S221-1~12] 12.5 Organic solar cells

[11a-S221-12] Development of Inverted Perovskite Solar Cells with Ion-blocking Layer

〇Takeshi Gotanda^1,2, Shigehiko Mori¹, Haruhi Oooka¹, Akio Amano¹, Kenji Todori¹, Hideyuki Nakao¹, Koji Mizuguchi¹ (1.Toshiba Corp., 2.Toshiba Energy Systems & Solutions Corp.)

Keywords:perovskite solar cells, stability, see-through

We developed inverted perovskite solar cells with ion-blocking layer for stability. ITO layer was inserted between perovskite layer(MAPbI_³) and Ag back electrode as ion-blocking layer. The ion-blocking layer prevents diffusing iodine from perovskite to Ag back electrode, without blocking electrons transported from perovskite. The inverted perovskite solar cells with ion-blocking layer increased heat stability. And the inverted perovskite solar cells realized see-through solar cells because the ITO layer supported conductivity of a thin Ag back electrode.