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All-back-contact ultra-thin silicon nanocone solar cells with 13.7% power conversion efficiency

Author

Listed:
  • Sangmoo Jeong

    (Stanford University)

  • Michael D. McGehee

    (Stanford University)

  • Yi Cui

    (Stanford University
    Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory)

Abstract

Thinner Si solar cells with higher efficiency can make a Si photovoltaic system a cost-effective energy solution, and nanostructuring has been suggested as a promising method to make thin Si an effective absorber. However, thin Si solar cells with nanostructures are not efficient because of severe Auger recombination and increased surface area, normally yielding 80% EQEs at wavelengths from 400 to 800 nm in a sub-10-μm-thick Si solar cell, resulting in 13.7% power conversion efficiency. This significant improvement was achieved with an all-back-contact design preventing Auger recombination and with a nanocone structure having less surface area than any other nanostructures for solar cells. The device design principles presented here balance the photonic and electronic effects together and are an important step to realizing highly efficient, thin Si and other types of thin solar cells.

Suggested Citation

  • Sangmoo Jeong & Michael D. McGehee & Yi Cui, 2013. "All-back-contact ultra-thin silicon nanocone solar cells with 13.7% power conversion efficiency," Nature Communications, Nature, vol. 4(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3950
    DOI: 10.1038/ncomms3950
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    Cited by:

    1. Taojian Wu & Zhaolang Liu & Hao Lin & Pingqi Gao & Wenzhong Shen, 2024. "Free-standing ultrathin silicon wafers and solar cells through edges reinforcement," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    2. Koosha Nassiri Nazif & Alwin Daus & Jiho Hong & Nayeun Lee & Sam Vaziri & Aravindh Kumar & Frederick Nitta & Michelle E. Chen & Siavash Kananian & Raisul Islam & Kwan-Ho Kim & Jin-Hong Park & Ada S. Y, 2021. "High-specific-power flexible transition metal dichalcogenide solar cells," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    3. Wang, Xiaohui & Xu, Li & Ge, Shengbo & Foong, Shin Ying & Liew, Rock Keey & Fong Chong, William Woei & Verma, Meenakshi & Naushad, Mu. & Park, Young-Kwon & Lam, Su Shiung & Li, Qian & Huang, Runzhou, 2023. "Biomass-based carbon quantum dots for polycrystalline silicon solar cells with enhanced photovoltaic performance," Energy, Elsevier, vol. 274(C).

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