[16p-Z02-1~8] Expansion of solar energy application and applied physics led by multinary compounds

△ [16p-Z02-6] Efficiency Improvement of Single-junction InGaAs Solar Cells
and Evaluation of Their External Radiative Efficiency by EL Measurement

〇(M1)Riko Yokota¹, Kentaroh Watanabe², Hassanet Sodabanlu², Meita Asami¹, Hao Xu², Yoshiaki Nakano¹, Masakazu Sugiyama^1,2 (1.UTokyo, 2.RCAST)

Keywords:solar cell, InGaAs, EL

In this study, High-efficiency InGaAs single-junction solar cells were fabricated, and the improvement of the open circuit voltage due to the suppress of the non-radiative recombination was evaluated by the electroluminescence (EL) measurement. Moreover, the mapping of the EL intensity, and the relationship between the external radiative efficiency and the open circuit voltage of various InGaAs single-junction solar cells were examined to improve the efficiency of InGaAs single-junction solar cells.