Conversion Efficiency of 45.0% in InGaP/InGaAs/Ge Triple-Junction Solar Cells for Laser Power Beaming

Optical wireless power transmission systems are attracting attention as a new power transmission technology because they can supply power wirelessly over long distances. In this study, we investigated InGaP/InGaAs/Ge triple-junction solar cells simultaneously irradiated with three laser beams with w...

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Bibliographic Details
Published inEnergies (Basel) Vol. 17; no. 13; p. 3299
Main Authors Koga, Masahiro, Shibui, Shunsuke, Matsuoka, Nozomi, Sudo, Tomoya, Uchida, Shiro
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.07.2024
Subjects
Dependence
Efficiency
Electricity distribution
InGaP/InGaAs/Ge
Lasers
Light
Optical wireless
optical wireless power transmission
Photovoltaic cells
Power supply
Sensors
triple-junction solar cells
United States > US
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Summary:Optical wireless power transmission systems are attracting attention as a new power transmission technology because they can supply power wirelessly over long distances. In this study, we investigated InGaP/InGaAs/Ge triple-junction solar cells simultaneously irradiated with three laser beams with wavelengths of 635 nm, 850 nm, and 1550 nm to improve photoelectric conversion efficiency. As a result, a photoelectric conversion efficiency of 45.0% was obtained under three laser irradiations with a total incident laser power of 1.77 W/cm2. The results showed the possibility of a high-efficiency optical wireless power transmission system by simultaneously irradiating laser beams with different wavelengths onto multi-junction solar cells, which could be installed in automobiles as a new system that complements solar power generation for daylighting.
ISSN:1996-1073
1996-1073
DOI:10.3390/en17133299