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

Masahiro Koga, Shunsuke Shibui, Nozomi Matsuoka, Tomoya Sudo and Shiro Uchida ()
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Masahiro Koga: Department of Advanced Materials Science and Engineering, Faculty of Engineering, Tsudanuma Campus, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino 275-0016, Japan
Shunsuke Shibui: Department of Advanced Materials Science and Engineering, Faculty of Engineering, Tsudanuma Campus, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino 275-0016, Japan
Nozomi Matsuoka: Department of Advanced Materials Science and Engineering, Faculty of Engineering, Tsudanuma Campus, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino 275-0016, Japan
Tomoya Sudo: Department of Advanced Materials Science and Engineering, Faculty of Engineering, Tsudanuma Campus, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino 275-0016, Japan
Shiro Uchida: Department of Advanced Materials Science and Engineering, Faculty of Engineering, Tsudanuma Campus, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino 275-0016, Japan

Energies, 2024, vol. 17, issue 13, 1-12

Abstract: 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/cm 2 . 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.

Keywords: optical wireless power transmission; InGaP/InGaAs/Ge; triple-junction solar cells (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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