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Design optimization of bifacial perovskite minimodules for improved efficiency and stability

Author

Listed:
  • Hangyu Gu

    (University of North Carolina at Chapel Hill)

  • Chengbin Fei

    (University of North Carolina at Chapel Hill)

  • Guang Yang

    (University of North Carolina at Chapel Hill)

  • Bo Chen

    (University of North Carolina at Chapel Hill)

  • Md Aslam Uddin

    (University of North Carolina at Chapel Hill)

  • Hengkai Zhang

    (University of North Carolina at Chapel Hill)

  • Zhenyi Ni

    (University of North Carolina at Chapel Hill)

  • Haoyang Jiao

    (University of North Carolina at Chapel Hill)

  • Wenzhan Xu

    (University of North Carolina at Chapel Hill)

  • Zijie Yan

    (University of North Carolina at Chapel Hill)

  • Jinsong Huang

    (University of North Carolina at Chapel Hill
    University of North Carolina at Chapel Hill)

Abstract

The efficiency and stability of bifacial perovskite solar modules are still relatively low. Here we report bifacial minimodules with front efficiency comparable to opaque monofacial counterparts, while gaining additional energy from albedo light. We add a hydrophobic additive to the hole transport layer to protect the perovskite films from moisture. We integrate silica nanoparticles with proper size and spacing in perovskite films to recover the absorption loss induced by the absence of reflective metal electrodes. The small-area single-junction bifacial perovskite cells have a power-generation density of 26.4 mW cm−2 under 1 sun illumination and an albedo of 0.2. The bifacial minimodules show front efficiency of over 20% and bifaciality of 74.3% and thus a power-generation density of over 23 mW cm−2 at an albedo of 0.2. The bifacial minimodule retains 97% of its initial efficiency after light soaking under 1 sun for over 6,000 hours at 60 ± 5 °C.

Suggested Citation

  • Hangyu Gu & Chengbin Fei & Guang Yang & Bo Chen & Md Aslam Uddin & Hengkai Zhang & Zhenyi Ni & Haoyang Jiao & Wenzhan Xu & Zijie Yan & Jinsong Huang, 2023. "Design optimization of bifacial perovskite minimodules for improved efficiency and stability," Nature Energy, Nature, vol. 8(7), pages 675-684, July.
    • Handle: RePEc:nat:natene:v:8:y:2023:i:7:d:10.1038_s41560-023-01254-3
    DOI: 10.1038/s41560-023-01254-3
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    Cited by:

    1. Jing Zhang & Xian-Gang Hu & Kangyu Ji & Songru Zhao & Dongtao Liu & Bowei Li & Peng-Xiang Hou & Chang Liu & Lirong Liu & Samuel D. Stranks & Hui-Ming Cheng & S. Ravi P. Silva & Wei Zhang, 2024. "High-performance bifacial perovskite solar cells enabled by single-walled carbon nanotubes," Nature Communications, Nature, vol. 15(1), pages 1-12, December.

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