[19a-A35-1~11] 3.12 Semiconductor optical devices

11:15 AM - 11:30 AM JST(2:15 AM - 2:30 AM UTC)

[19a-A35-9] Temperature dependence of photoelectric conversion efficiency of CIGS solar cells for OWPT

〇(M1)Moeka Chiba¹, Shuntaro Fujii¹, Kyosuke Sato¹, Riku Maeno¹, Shunsuke Shibui¹, Hironori Komaki², Hiroshi Tomita², Hiroaki Nakamura², Yusuke Oda², Takato Ishiuchi², Shiro Uchida¹ (1.Chiba Inst., 2.Idemitsu Kosan Co., Ltd.)

Keywords:

optical wireless power transmission,CIGS solar cell

Optical wireless power transmission (OWPT) has attracted attention as a new energy transmission technology. We focused on CIGS solar cells, which are expected to be applied to OWPT as light-receiving devices because of their low cost. We investigated the effect of temperature rise of CIGS solar cells under laser light irradiation on their photoelectric conversion efficiency. As a result, CIGS solar cells were less susceptible to a decrease in photoelectric conversion efficiency at high temperatures in the near-infrared region. This result raises expectations for applications in OWPT systems in the near-infrared region.