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; Shiro Uchida

doi:10.3390/en17133299

Energies (Jul 2024)

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,
Shiro Uchida

Affiliations

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

DOI: https://doi.org/10.3390/en17133299
Journal volume & issue: Vol. 17, no. 13
p. 3299

Abstract

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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.

Published in Energies

ISSN: 1996-1073 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology
Website: http://www.mdpi.com/journal/energies

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