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Inorganic wide-bandgap perovskite subcells with dipole bridge for all-perovskite tandems

Author

Listed:
  • Tiantian Li

    (Nanjing University
    Nankai University)

  • Jian Xu

    (University of Toronto)

  • Renxing Lin

    (Nanjing University)

  • Sam Teale

    (University of Toronto)

  • Hongjiang Li

    (Nanjing University)

  • Zhou Liu

    (Nanjing University)

  • Chenyang Duan

    (Nanjing University)

  • Qian Zhao

    (Nankai University)

  • Ke Xiao

    (Nanjing University)

  • Pu Wu

    (Nanjing University)

  • Bin Chen

    (University of Toronto)

  • Sheng Jiang

    (East China Normal University)

  • Shaobing Xiong

    (East China Normal University)

  • Haowen Luo

    (Nanjing University)

  • Sushu Wan

    (Nanjing University)

  • Ludong Li

    (Nanjing University)

  • Qinye Bao

    (East China Normal University)

  • Yuxi Tian

    (Nanjing University)

  • Xueping Gao

    (Nankai University)

  • Jin Xie

    (Nanjing University)

  • Edward H. Sargent

    (University of Toronto)

  • Hairen Tan

    (Nanjing University)

Abstract

Operating stability has become a priority issue for all-perovskite tandem solar cells. Inorganic CsPbI3−xBrx perovskites, which have good photostability against halide segregation, are promising alternatives for all-perovskite tandem solar cells. However, the interface between organic transport layers and inorganic perovskite suffers from a large energetic mismatch and inhibits charge extraction compared with hybrid analogues, resulting in low open-circuit voltages and fill factors. Here we show that inserting at this interface a passivating dipole layer having high molecular polarity—a molecule that interacts strongly with both inorganic perovskite and C60—reduces the energetic mismatch and accelerates the charge extraction. This strategy resulted in a power conversion efficiency (PCE) of 18.5% in wide-bandgap (WBG) devices. We report all-perovskite tandems using an inorganic WBG subcell, achieving a PCE of 25.6% (steady state 25.2%). Encapsulated tandems retain 96% of their initial performance after 1,000 h of simulated 1-sun operation at the maximum power point.

Suggested Citation

  • Tiantian Li & Jian Xu & Renxing Lin & Sam Teale & Hongjiang Li & Zhou Liu & Chenyang Duan & Qian Zhao & Ke Xiao & Pu Wu & Bin Chen & Sheng Jiang & Shaobing Xiong & Haowen Luo & Sushu Wan & Ludong Li &, 2023. "Inorganic wide-bandgap perovskite subcells with dipole bridge for all-perovskite tandems," Nature Energy, Nature, vol. 8(6), pages 610-620, June.
    • Handle: RePEc:nat:natene:v:8:y:2023:i:6:d:10.1038_s41560-023-01250-7
    DOI: 10.1038/s41560-023-01250-7
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    Cited by:

    1. Jian Xu & Aidan Maxwell & Zhaoning Song & Abdulaziz S. R. Bati & Hao Chen & Chongwen Li & So Min Park & Yanfa Yan & Bin Chen & Edward H. Sargent, 2024. "The dynamic adsorption affinity of ligands is a surrogate for the passivation of surface defects," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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