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

Author

Listed:
  • 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)

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.

Suggested Citation

  • Masahiro Koga & Shunsuke Shibui & Nozomi Matsuoka & Tomoya Sudo & Shiro Uchida, 2024. "Conversion Efficiency of 45.0% in InGaP/InGaAs/Ge Triple-Junction Solar Cells for Laser Power Beaming," Energies, MDPI, vol. 17(13), pages 1-12, July.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:13:p:3299-:d:1429411
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