[22a-B103-1~12] 12.5 Organic solar cells

[22a-B103-11] Investigation of Current Matching Condition in Perovskite/Silicon Tandem Solar Cells

〇Itsuki Hirano¹, Miyuki Shiokawa^1,4, Mengmeng Chen², Shuji Hayase², Hitoshi Sai³, Takuya Matsui³, Tomohiro Tobari¹, Yutaka Saita¹, Takeshi Gotanda^1,4 (1.Toshiba Energy Systems & Solutions, 2.UEC, 3.AIST, 4.Toshiba)

Keywords:perovskite, tandem, silicon

We developed two-terminal perovskite/silicon tandem solar cells exhibiting higher power conversion efficiency (PCE) than that of the silicon bottom cells. The tandem cells showed 25.5% of PCE by adjusting the current density between top and bottom cells. This gave 8.2% absolute increase from the original PCE of the bottom cell, 17.3%. In the future, we aim for more than 30% of PCE by reduction of reflection loss and optimization of the tandem structure.