II-V族化合物太陽電池の高効率光無線給電への応用
2018 年 46 巻 12 号 p. 698-
詳細
2018 年 46 巻 12 号 p. 698-
The power conversion efficiencies of such single-junction III-V solar cells as GaAs and GaInP for wireless power transmission were investigated by changing the wavelength and the incident power of a laser diode. The GaAs solar cell exhibited the highest conversion efficiency of 52.7% at a laser wavelength of 824 nm, and the GaInP solar cell exhibited the highest conversion efficiency of 48.0% at a laser wavelength of 520 nm. For each solar cell, the conversion efficiency peaked at an optimal incident laser wavelength. We found that the conversion efficiency strongly depends on the external quantum efficiency of each solar cell.
