[6a-S21-1~9] 13.10 Compound solar cells

[6a-S21-1] Effects of long-term heat-light soaking on CIGS solar cells with KF-PDT

〇Jiro Nishinaga¹, Takashi Koida¹, Shogo Ishizuka¹, Yukiko Kamikawa¹, Hajime Shibata¹, Shigeru Niki¹ (1.AIST)

Keywords:CIGS solar cells, KF-PDT, Heat-light soaking

The effects of long-term heat-light soaking on CIGS solar cells with KF-PDT are investigated. Although light soaking improves the hole concentrations, the resulting increase in conversion efficiency is not significant. In contrast, heat-light soaking effectively improves the saturation current density and ideality factor by passivating the recombination centers at CIGS layers and CdS/CIGS interfaces. Therefore, high conversion efficiencies are achieved after heat-light soaking.