[20p-136-1~11] 13.9 Compound solar cells

[20p-136-6] Influence of scattered light on conversion efficiency of multi-junction solar cells under real concentrated sunlight

〇(B)Shinya Honda¹, Yoshihito Imamatsu¹, Hideo Teramoto¹, Yuki Nakamura¹, Ryota Jomen¹, Yoshiaki Ajima¹, Tomoya Kamata¹, Shu Takahashi¹, Naoki Saito¹, Shunsuke Hayashi¹, Yuichi Mikami¹, Masayoshi Kawahara¹, Shogo Murayama¹, Yasuyuki Ota², Pan Dai³, Shulong Lu³, Shiro Uchida¹ (1.Chiba Inst., 2.Miyazaki Univ. OPTT, 3.Suzhou Inst.)

Keywords:Compound Semiconductor Solar Cell, Conversion efficiency

In order to estimate conversion efficiencies of solar cells under real concentrated sunlight, it is necessary to reduce the influence of scattered light. In this study, solar cells were surrounded by a cylinder at 1-sun measurement to reduce the incidence of scattered light component. The concentration ratio and conversion efficiencies were calculated on the basis of this experimental results. As a result, depending on the presence or absence of scattered light component, there were differences in conversion efficiency of 4.6% at the maximum for the 4-junction solar cell and 3.4% at the maximum for the 3-junction solar cell.