A 43.0% efficient GaInP photonic power converter with a distributed Bragg reflector under high-power 638 nm laser irradiation of 17 W cm⁻²

Abstract Optical wireless power transmission systems incorporating photovoltaic cells and lasers are expected to serve as next-generation energy supply devices for automobiles autonomous underwater vehicles. High photoelectric conversion efficiencies over 40% of converters under high-power irradiation 10 W cm −2 required the practical application in these applications. We achieved a high efficiency 43.0% GaInP photonic converter 638 nm laser 17.0 by multi-crossed finger electrodes distributed Bragg reflector. The highest efficiency, 46.0% cell, was also obtained at 1.1 irradiation.