[15p-A34-1~19] 13.10 Compound solar cells

[15p-A34-19] Evaluation of InGaP/GaAs/InGaAsP/InGaAs solar cell by absolute electroluminescence-efficiency measurements

Yoshiaki Ajima¹, Haruka Ishiguro¹, Yamato Kaneko¹, Yoshinori Kato¹, Lin Zhu², Masahiro Yoshita², Hidefumi Akiyama², Pan Dai³, Shulong Lu³, 〇Shiro Uchida¹ (1.Chiba Inst, 2.ISSP, Univ. of Tokyo, 3.Suzhou Inst)

Keywords:solar cell, EL

It is difficult for a multi-junction solar cell (MJSC) to estimate separately an open circuit voltage for each subcell. We calculated an open circuit voltage for each subcell of InGaP/GaAs/InGaAsP/InGaAs solar cell by absolute electroluminescence-efficiency measurements. In a result, the calculated values of Voc were very close to those of the single-junction solar cells with the same base materials. Therefore, this method is very effective for MJSC.