[23a-E106-1~11] 13.9 Compound solar cells

[23a-E106-3] Impact of AlO_x rear-passivation on CIGS solar cells

〇Yukiko Kamikawa¹, Marco Nardone², Hajime Shibata¹, Shogo Ishizuka¹ (1.AIST, 2.BGSU)

Keywords:passivation, CIGS, solar cell

Suppression of interface recombination is indispensable for improving the performances of semiconductor devices. For CIGS solar cells, it is predicted from device simulation that the impacts of recombination at back contact will increase as the crystal quality improves. In this study, we introduced an AlO_x passivation film into a thin CIGS solar cell and examined its effects. We will present the results for the solar cells with thin absorbers, where impact of recombination at back contact is crucial.