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All-perovskite tandem solar cells with 24.2% certified efficiency and area over 1 cm2 using surface-anchoring zwitterionic antioxidant

Author

Listed:
  • Ke Xiao

    (Nanjing University
    Nanjing University)

  • Renxing Lin

    (Nanjing University)

  • Qiaolei Han

    (Nanjing University)

  • Yi Hou

    (University of Toronto)

  • Zhenyuan Qin

    (Nanjing University)

  • Hieu T. Nguyen

    (The Australian National University)

  • Jin Wen

    (Nanjing University)

  • Mingyang Wei

    (University of Toronto)

  • Vishal Yeddu

    (University of Victoria)

  • Makhsud I. Saidaminov

    (University of Victoria)

  • Yuan Gao

    (Nanjing University)

  • Xin Luo

    (Nanjing University
    Nanjing University)

  • Yurui Wang

    (Nanjing University)

  • Han Gao

    (Nanjing University)

  • Chunfeng Zhang

    (Nanjing University)

  • Jun Xu

    (Nanjing University)

  • Jia Zhu

    (Nanjing University)

  • Edward H. Sargent

    (University of Toronto)

  • Hairen Tan

    (Nanjing University)

Abstract

Monolithic all-perovskite tandem solar cells offer an avenue to increase power conversion efficiency beyond the limits of single-junction cells. It is an important priority to unite efficiency, uniformity and stability, yet this has proven challenging because of high trap density and ready oxidation in narrow-bandgap mixed lead–tin perovskite subcells. Here we report simultaneous enhancements in the efficiency, uniformity and stability of narrow-bandgap subcells using strongly reductive surface-anchoring zwitterionic molecules. The zwitterionic antioxidant inhibits Sn2+ oxidation and passivates defects at the grain surfaces in mixed lead–tin perovskite films, enabling an efficiency of 21.7% (certified 20.7%) for single-junction solar cells. We further obtain a certified efficiency of 24.2% in 1-cm2-area all-perovskite tandem cells and in-lab power conversion efficiencies of 25.6% and 21.4% for 0.049 cm2 and 12 cm2 devices, respectively. The encapsulated tandem devices retain 88% of their initial performance following 500 hours of operation at a device temperature of 54–60 °C under one-sun illumination in ambient conditions.

Suggested Citation

  • Ke Xiao & Renxing Lin & Qiaolei Han & Yi Hou & Zhenyuan Qin & Hieu T. Nguyen & Jin Wen & Mingyang Wei & Vishal Yeddu & Makhsud I. Saidaminov & Yuan Gao & Xin Luo & Yurui Wang & Han Gao & Chunfeng Zhan, 2020. "All-perovskite tandem solar cells with 24.2% certified efficiency and area over 1 cm2 using surface-anchoring zwitterionic antioxidant," Nature Energy, Nature, vol. 5(11), pages 870-880, November.
    • Handle: RePEc:nat:natene:v:5:y:2020:i:11:d:10.1038_s41560-020-00705-5
    DOI: 10.1038/s41560-020-00705-5
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    Cited by:

    1. Bahram Abdollahi Nejand & David B. Ritzer & Hang Hu & Fabian Schackmar & Somayeh Moghadamzadeh & Thomas Feeney & Roja Singh & Felix Laufer & Raphael Schmager & Raheleh Azmi & Milian Kaiser & Tobias Ab, 2022. "Scalable two-terminal all-perovskite tandem solar modules with a 19.1% efficiency," Nature Energy, Nature, vol. 7(7), pages 620-630, July.
    2. Khan, Firoz & Rezgui, Béchir Dridi & Khan, Mohd Taukeer & Al-Sulaiman, Fahad, 2022. "Perovskite-based tandem solar cells: Device architecture, stability, and economic perspectives," Renewable and Sustainable Energy Reviews, Elsevier, vol. 165(C).
    3. 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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