[18p-232-1~17] 3.13 Semiconductor optical devices

△ [18p-232-10] Application of III-V compound semiconductor solar cell for high-efficiency optical wireless power transmission (5)

〇(M1C)Fumiaki Tanaka¹, Tasuku Suzuki¹, Masaki Ito¹, Naohiro Takahashi¹, Yuki Komuro¹, Ryota Jomen¹, Pan Dai², Shulong Lu², Shiro Uchida¹ (1.Chiba Inst., 2.Suzhou Inst.)

Keywords:Optical wireless power transmission, Solar cell, Laser

We have reported conversion efficiency in an optical wireless power transmission using III-V compound semiconductor solar cell. It was found system that high conversion efficiency could obtained by using a solar cell with a high open circuit voltage Voc and a large band gap. In this study, we experimented a combination of GaInP / GaAs two-junction solar cell with large Voc and two different wavelength lasers. As a result, a conversion efficiency of 33.4% was obtained which was almost the same level as that of the single-junction system with one wavelength laser.