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Surface-passivated GaAsP single-nanowire solar cells exceeding 10% efficiency grown on silicon

Author

Listed:
  • Jeppe V. Holm

    (SunFlake A/S, Universitetsparken 5)

  • Henrik I. Jørgensen

    (SunFlake A/S, Universitetsparken 5)

  • Peter Krogstrup

    (Nano-Science Center, Niels Bohr Institute, University of Copenhagen, Universitetsparken 5)

  • Jesper Nygård

    (Nano-Science Center, Niels Bohr Institute, University of Copenhagen, Universitetsparken 5
    Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen, Universitetsparken 5)

  • Huiyun Liu

    (University College London)

  • Martin Aagesen

    (SunFlake A/S, Universitetsparken 5)

Abstract

Continued development of high-efficiency multi-junction solar cells requires growth of lattice-mismatched materials. Today, the need for lattice matching both restricts the bandgap combinations available for multi-junctions solar cells and prohibits monolithic integration of high-efficiency III-V materials with low-cost silicon solar cells. The use of III-V nanowires is the only known method for circumventing this lattice-matching constraint, and therefore it is necessary to develop growth of nanowires with bandgaps >1.4 eV. Here we present the first gold-free gallium arsenide phosphide nanowires grown on silicon by means of direct epitaxial growth. We demonstrate that their bandgap can be controlled during growth and fabricate core-shell nanowire solar cells. We further demonstrate that surface passivation is of crucial importance to reach high efficiencies, and present a record efficiency of 10.2% for a core-shell single-nanowire solar cell.

Suggested Citation

  • Jeppe V. Holm & Henrik I. Jørgensen & Peter Krogstrup & Jesper Nygård & Huiyun Liu & Martin Aagesen, 2013. "Surface-passivated GaAsP single-nanowire solar cells exceeding 10% efficiency grown on silicon," Nature Communications, Nature, vol. 4(1), pages 1-5, June.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms2510
    DOI: 10.1038/ncomms2510
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    Cited by:

    1. Sung Bum Kang & Rahul Sharma & Minhyeok Jo & Su In Kim & Jeongwoo Hwang & Sang Hyuk Won & Jae Cheol Shin & Kyoung Jin Choi, 2022. "Catalysis-Free Growth of III-V Core-Shell Nanowires on p -Si for Efficient Heterojunction Solar Cells with Optimized Window Layer," Energies, MDPI, vol. 15(5), pages 1-10, February.

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