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Inductive effects in molecular contacts enable wide-bandgap perovskite cells for efficient perovskite/TOPCon tandems

Author

Listed:
  • Yixin Luo

    (Zhejiang University)

  • Yuan Tian

    (Zhejiang University
    Westlake Institute for Advanced Study)

  • Ke Zhao

    (Zhejiang University
    Westlake Institute for Advanced Study)

  • Weiping Mao

    (Jietai New Energy Technology Co., Ltd)

  • Chen Liu

    (Yangzhou University)

  • Jiahui Shen

    (Westlake Institute for Advanced Study
    Yangzhou University)

  • Zhendong Cheng

    (Westlake Institute for Advanced Study)

  • Caner Değer

    (Ziverbey)

  • Xiaohe Miao

    (Westlake University)

  • Zhongwei Zhang

    (Dongfang Electric (Hangzhou) Innovation Institute Co., Ltd.)

  • Xuechun Sun

    (Zhejiang University
    Westlake Institute for Advanced Study)

  • Libing Yao

    (Westlake Institute for Advanced Study)

  • Xu Zhang

    (Zhejiang University
    Westlake Institute for Advanced Study)

  • Pengju Shi

    (Zhejiang University
    Westlake Institute for Advanced Study)

  • Donger Jin

    (Zhejiang University)

  • Jiaxiao Deng

    (Jietai New Energy Technology Co., Ltd)

  • Mengyuan Tian

    (Jietai New Energy Technology Co., Ltd)

  • Ilhan Yavuz

    (Ziverbey)

  • Na Dong

    (Dongfang Electric (Hangzhou) Innovation Institute Co., Ltd.)

  • Ruzhang Liu

    (Yangzhou University)

  • Rui Wang

    (Westlake Institute for Advanced Study)

  • Deren Yang

    (Zhejiang University)

  • Jingjing Xue

    (Zhejiang University
    Shangyu Institute of Semiconductor Materials)

Abstract

Organic molecules that serve as hole-selective contacts, known as self-assembled monolayers (SAMs), play a pivotal role in ensuring high-performance perovskite photovoltaics. Optimal energy alignment between the SAM and the perovskite is essential for desired photovoltaic performance. However, many SAMs are studied in optimal-bandgap perovskites, with limited energy level modification specifically catering to wide-bandgap perovskites. Herein, we demonstrate that the energy level of SAMs can be systematically tuned in a stepwise manner via inductive effects in the conjugated moieties, enabling rational design tailored for specific perovskite bandgaps. The resulting WBG perovskite device based on our tuned SAM achieved a power conversion efficiency (PCE) of 22.8%. Integration with crystalline silicon TOPCon subcells further enabled the construction of a perovskite/TOPCon tandem device with a PCE of 31.1% (certified 30.9%).

Suggested Citation

  • Yixin Luo & Yuan Tian & Ke Zhao & Weiping Mao & Chen Liu & Jiahui Shen & Zhendong Cheng & Caner Değer & Xiaohe Miao & Zhongwei Zhang & Xuechun Sun & Libing Yao & Xu Zhang & Pengju Shi & Donger Jin & J, 2025. "Inductive effects in molecular contacts enable wide-bandgap perovskite cells for efficient perovskite/TOPCon tandems," Nature Communications, Nature, vol. 16(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-59896-8
    DOI: 10.1038/s41467-025-59896-8
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    References listed on IDEAS

    as
    1. Jingwei Zhu & Yi Luo & Rui He & Cong Chen & Yang Wang & Jincheng Luo & Zongjin Yi & Jarla Thiesbrummel & Changlei Wang & Felix Lang & Huagui Lai & Yuliang Xu & Juncheng Wang & Zhihao Zhang & Wenqing L, 2023. "A donor–acceptor-type hole-selective contact reducing non-radiative recombination losses in both subcells towards efficient all-perovskite tandems," Nature Energy, Nature, vol. 8(7), pages 714-724, July.
    2. Ke Zhao & Qingqing Liu & Libing Yao & Caner Değer & Jiahui Shen & Xu Zhang & Pengju Shi & Yuan Tian & Yixin Luo & Jiazhe Xu & Jingjing Zhou & Donger Jin & Sisi Wang & Wei Fan & Shaochen Zhang & Shengl, 2024. "peri-Fused polyaromatic molecular contacts for perovskite solar cells," Nature, Nature, vol. 632(8024), pages 301-306, August.
    3. Sanwan Liu & Jingbai Li & Wenshan Xiao & Rui Chen & Zhenxing Sun & Yong Zhang & Xia Lei & Shuaifeng Hu & Manuel Kober-Czerny & Jianan Wang & Fumeng Ren & Qisen Zhou & Hasan Raza & You Gao & Yitong Ji , 2024. "Buried interface molecular hybrid for inverted perovskite solar cells," Nature, Nature, vol. 632(8025), pages 536-542, August.
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