Journal
APPLIED PHYSICS EXPRESS
Volume 15, Issue 6, Pages -Publisher
IOP Publishing Ltd
DOI: 10.35848/1882-0786/ac67bb
Keywords
GaInP; converter; optical wireless power transmission
Categories
Funding
- JSPS KAKENHI [JP21K03982]
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Researchers have improved the efficiency of photonic power converters under high-power laser irradiation by achieving a uniform laser intensity distribution and reducing the distance between electrodes on the converter cell surface. The GaInP converter cell showed the highest conversion efficiency under uniform laser irradiation of specific wavelength and power.
Photonic power converters for optical wireless power transmission have challenged improving photoelectric conversion efficiency under high-power laser irradiation. We developed the efficiency under high-power irradiation by making the laser intensity distribution uniform and narrowing the distance L (mu m) between the comb-shaped electrodes on the converter cell surface. As a result, the GaInP converter cell with L = 234 mu m showed the highest conversion efficiency of 46.7% under uniform 638 nm laser irradiation of 1.5 W cm(-2). The exceeding 45.5% efficiencies under 1.0-6.2 W cm(-2) uniform 635 nm laser irradiation were also obtained in the GaInP converter cell with L = 106 mu m.
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