[16p-M_101-1~18] 13.9 Compound solar cells

1:45 PM - 2:00 PM JST(4:45 AM - 5:00 AM UTC)

[16p-M_101-2] Improving transparency of Cu₂O top cell for realization of highly efficient Cu₂O/Si Tandem Solar Cells

〇Takashi Yamamoto¹, Soichiro Shibasaki¹, Kanta Sugimoto¹, Naoyuki Nakagawa¹, Yuya Honishi¹, Yukitami Mizuno¹, Atsushi Wada¹, Sara Yoshio¹, Motohiro Toyota¹, Junji Sano¹, Yasutaka Nishida¹, Kazushige Yamamoto¹ (1.Toshiba Corp.)

Keywords:

solar cell,cuprous oxide solar cell,tandem solar cell

To achieve highly efficient four-terminal Cu₂O/Si tandem solar cells with efficiencies exceeding 30%, we have been working not only on improving the top cell performance but also on enhancing the optical transmittance of the top cell, which contributes to increasing the efficiency of the bottom cell. In this study, we demonstrate that the introduction of a new layer enables both high efficiency and high transmittance in the top cell. In this presentation, we will report on evaluating reflection-reduction strategies by optical simulations, the photovoltaic characteristics of cells incorporating the new layer, and the performance evaluation of practical-sized cells.