[18p-A408-1~8] CS.7 Code-sharing Session of 12.5 & 13.9 & 16.3

[18p-A408-2] 【Highlighted Presentation】1000 h Light-Soaking Stability in Perovskite/Silicon Tandem Solar Cells

〇Miyuki Shiokawa^1,7, Itsuki Hirano¹, Takeshi Kitamura², Daisuke Hirotani⁴, Daishiro Nomura⁴, Masahiro Hayashi⁵, Takatoshi Nomura⁵, Masaki Nakamura⁶, Tomoyuki Hirami⁶, Shuzi Hayase², Hitoshi Sai³, Takuya Matsui³, Takeshi Gotanda^1,7 (1.Toshiba Energy Systems & Solutions, 2.UEC, 3.AIST, 4.FUJICO, 5.CKD, 6.USHIO, 7.Toshiba)

Keywords:perovskite, tandem, solar cell

We have developed two-terminal perovskite/silicon tandem solar cells. We have improved durability of the tandem solar cells against light by increasing stability of ions that compose the perovskite. A tandem solar cell was encapsulated into a glass cylinder and exposed to light under AM1.5G, 100mW/cm² illumination without UV cut filter. Initial PCE of the tandem solar cell was 21.2%. Degradation rate of the tandem cell after 1000 h light-soaking was 9.57%. We have achieved the light-soaking stability of T₉₀: >1000 h in perovskite/silicon tandem cells for the first time in the world.