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    Printable CsPbI3 Perovskite Solar Cells with PCE of 19% via an Additive Strategy.

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    printable.pdf
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    Description:
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    Type
    Article
    Authors
    Chang, Xiaoming
    Fang, Junjie
    Fan, Yuanyuan
    Luo, Tao
    Su, Hang
    Zhang, Yalan
    Lu, Jing
    Tsetseris, Leonidas
    Anthopoulos, Thomas D. cc
    Liu, Shengzhong (Frank) cc
    Zhao, Kui
    KAUST Department
    Physical Science and Engineering (PSE) Division
    Material Science and Engineering Program
    KAUST Solar Center (KSC)
    Date
    2020-08-31
    Online Publication Date
    2020-08-31
    Print Publication Date
    2020-10
    Embargo End Date
    2021-09-01
    Submitted Date
    2020-02-21
    Permanent link to this record
    http://hdl.handle.net/10754/664998
    
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    Abstract
    All-inorganic CsPbI3 holds promise for efficient tandem solar cells, but reported fabrication techniques are not transferrable to scalable manufacturing methods. Herein, printable CsPbI3 solar cells are reported, in which the charge transporting layers and photoactive layer are deposited by fast blade-coating at a low temperature (≤100 °C) in ambient conditions. High-quality CsPbI3 films are grown via introducing a low concentration of the multifunctional molecular additive Zn(C6 F5 )2 , which reconciles the conflict between air-flow-assisted fast drying and low-quality film including energy misalignment and trap formation. Material analysis reveals a preferential accumulation of the additive close to the perovskite/SnO2 interface and strong chemisorption on the perovskite surface, which leads to the formation of energy gradients and suppressed trap formation within the perovskite film, as well as a 150 meV improvement of the energetic alignment at the perovskite/SnO2 interface. The combined benefits translate into significant enhancement of the power conversion efficiency to 19% for printable solar cells. The devices without encapsulation degrade only by ≈2% after 700 h in air conditions.
    Citation
    Chang, X., Fang, J., Fan, Y., Luo, T., Su, H., Zhang, Y., … Zhao, K. (2020). Printable CsPbI 3 Perovskite Solar Cells with PCE of 19% via an Additive Strategy. Advanced Materials, 2001243. doi:10.1002/adma.202001243
    Sponsors
    This work was supported by the National Key Research and Development Program of China (2016YFA0202403, 2017YFA0204800), Key Program project of the National Natural Science Foundation of China (51933010), National Natural Science Foundation of China (61974085), National University Research Fund (GK201802005), the 111 Project (B14041), the National 1000 Talents Plan program (1110010341).
    Publisher
    Wiley
    Journal
    Advanced Materials
    DOI
    10.1002/adma.202001243
    PubMed ID
    32864773
    Additional Links
    https://onlinelibrary.wiley.com/doi/abs/10.1002/adma.202001243
    ae974a485f413a2113503eed53cd6c53
    10.1002/adma.202001243
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program; KAUST Solar Center (KSC)

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