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Surfactant-controlled ink drying enables high-speed deposition of perovskite films for efficient photovoltaic modules

Author

Listed:
  • Yehao Deng

    (University of North Carolina at Chapel Hill
    University of Nebraska-Lincoln)

  • Xiaopeng Zheng

    (University of Nebraska-Lincoln)

  • Yang Bai

    (University of Nebraska-Lincoln)

  • Qi Wang

    (University of North Carolina at Chapel Hill
    University of Nebraska-Lincoln)

  • Jingjing Zhao

    (University of Nebraska-Lincoln)

  • Jinsong Huang

    (University of North Carolina at Chapel Hill
    University of Nebraska-Lincoln)

Abstract

Novel photovoltaic technologies such as perovskites hold the promise of a reduced levelized cost of electricity, but the low-cost potential depends on the ability to scale-up solution-based deposition. So far, complex fluid dynamics have limited the solution deposition of uniform pinhole-free organic–inorganic perovskite thin films over large areas. Here, we show that very small amounts (tens of parts per million) of surfactants (for example, l-α-Phosphatidylcholine) dramatically alter the fluid drying dynamics and increase the adhesion of the perovskite ink to the underlying non-wetting charge transport layer. The additives enable blading of smooth perovskite films at a coating rate of 180 m h–1 with root-mean-square roughness of 14.5 nm over 1 cm. The surfactants also passivate charge traps, resulting in efficiencies over 20% for small-area solar cells. Fast blading in air of perovskite films results in stabilized module efficiencies of 15.3% and 14.6% measured at aperture areas of 33.0 cm2 and 57.2 cm2, respectively.

Suggested Citation

  • Yehao Deng & Xiaopeng Zheng & Yang Bai & Qi Wang & Jingjing Zhao & Jinsong Huang, 2018. "Surfactant-controlled ink drying enables high-speed deposition of perovskite films for efficient photovoltaic modules," Nature Energy, Nature, vol. 3(7), pages 560-566, July.
    • Handle: RePEc:nat:natene:v:3:y:2018:i:7:d:10.1038_s41560-018-0153-9
    DOI: 10.1038/s41560-018-0153-9
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    Cited by:

    1. Sreeram Valsalakumar & Anurag Roy & Tapas K. Mallick & Justin Hinshelwood & Senthilarasu Sundaram, 2022. "An Overview of Current Printing Technologies for Large-Scale Perovskite Solar Cell Development," Energies, MDPI, vol. 16(1), pages 1-29, December.
    2. 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.

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