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Efficient monolithic all-perovskite tandem solar modules with small cell-to-module derate

Author

Listed:
  • Xuezeng Dai

    (University of North Carolina at Chapel Hill)

  • Shangshang Chen

    (University of North Carolina at Chapel Hill)

  • Haoyang Jiao

    (University of North Carolina at Chapel Hill)

  • Liang Zhao

    (University of North Carolina at Chapel Hill)

  • Ke Wang

    (University of Rochester)

  • Zhenyi Ni

    (University of North Carolina at Chapel Hill)

  • Zhenhua Yu

    (University of North Carolina at Chapel Hill)

  • Bo Chen

    (University of North Carolina at Chapel Hill)

  • Yongli Gao

    (University of Rochester)

  • Jinsong Huang

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

Abstract

All-perovskite tandem solar modules are promising to reduce the cost of photovoltaic systems with their high efficiency and solution fabrication, but their sensitivity to air still imposes a great challenge. Here a hot gas-assisted blading method is developed to accelerate the perovskite solidification, forming compact and thick narrow bandgap (NBG) perovskite films. Adding a reduction agent into NBG films followed by a short period of air exposure and a post-fabrication storage surprisingly increases carrier recombination lifetime and enables laser scribing in ambient conditions without obvious loss of device performance. This combination suppresses tin and iodide oxidation and forms a thin SnO2 layer on the NBG film surface. Monolithic all-perovskite tandem solar modules showed a champion efficiency of 21.6% with a 14.3 cm2 aperture area, corresponding to an active area efficiency of 23.0%. The very small cell-to-module derate of 6.5% demonstrates the advantage of a tandem monolithic structure for solar modules.

Suggested Citation

  • Xuezeng Dai & Shangshang Chen & Haoyang Jiao & Liang Zhao & Ke Wang & Zhenyi Ni & Zhenhua Yu & Bo Chen & Yongli Gao & Jinsong Huang, 2022. "Efficient monolithic all-perovskite tandem solar modules with small cell-to-module derate," Nature Energy, Nature, vol. 7(10), pages 923-931, October.
    • Handle: RePEc:nat:natene:v:7:y:2022:i:10:d:10.1038_s41560-022-01102-w
    DOI: 10.1038/s41560-022-01102-w
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    Cited by:

    1. Arnob Das & Susmita Datta Peu & Md Abdul Mannan Akanda & Mostafa M. Salah & Md. Sejan Hossain & Barun Kumar Das, 2023. "Numerical Simulation and Optimization of Inorganic Lead-Free Cs 3 Bi 2 I 9 -Based Perovskite Photovoltaic Cell: Impact of Various Design Parameters," Energies, MDPI, vol. 16(5), pages 1-20, February.

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