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SnO2-in-Polymer Matrix for High-Efficiency Perovskite Solar Cells with Improved Reproducibility and Stability

  • 作者:
    Wei, Jing[1] Guo, Fengwan[2] Wang, Xi[1] Xu, Kun(徐坤)[1] Lei, Ming(雷鸣)[1] Liang, Yongqi[2] Zhao, Yicheng[3] Xu, Dongsheng[2]
  • 地址:

    [1]Beijing Univ Posts & Telecommun, Sch Sci, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China;

    [2]Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100871, Peoples R China;

    [3]Friedrich Alexander Univ FAU Erlangen Nurnberg, Dept Mat Sci & Engn, I MEET, Martensstr 7, D-91058 Erlangen, Germany

  • 语种:
    英文
  • 期刊:
    ADVANCED MATERIALS ISSN:0935-9648 2018 年 30 卷 52 期 ; DEC 27
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  • 关键词:
  • 摘要:

    Understanding interfacial loss and the ways to improving interfacial property is critical to fabricate highly efficient and reproducible perovskite solar cells (PSCs). In SnO2-based PSCs, nonradiative recombination sites at the SnO2-perovskite interface lead to a large potential loss and performance variation in the resulting photovoltaic devices. Here, a novel SnO2-in-polymer matrix (i.e., polyethylene glycol) is devised as the electron transporting layer to improve the film quality of the SnO2 electron transporting layer. The SnO2-in-polymer matrix is fabricated through spin-coating a polymer-incorporated SnO2 colloidal ink. The polymer is uniformly dispersed in SnO2 colloidal ink and promotes the nanoparticle disaggregation in the ink. Owing to polymer incorporation, the compactness and wetting property of SnO2 layer is significantly ameliorated. Finally, photovoltaic devices based on Cs(0.05)FA(0.81)MA(0.14)PbI(2.55)Br(0.45) perovskite sandwiched between SnO2 and Spiro-OMeTAD layer are fabricated. Compared with the averaging power conversion efficiency of 16.2% with 1.2% deviation for control devices, the optimized devices exhibit an improved averaging efficiency of 19.5% with 0.25% deviation. The conception of polymer incorporation in the electron transporting layer paves a way to further increase the performance of planar perovskite solar cells.

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  • 基金信息:
    National Nature Science Foundation of China [21821004]; China Postdoctoral Science Foundation [2017M620694]; National Postdoctoral Program for Innovative Talents [BX201700040]; Alexander von Humboldt Foundation [1199604]
  • 推荐引用方式
    GB/T 7714:
    Wei Jing,Guo Fengwan,Wang Xi, et al. SnO2-in-Polymer Matrix for High-Efficiency Perovskite Solar Cells with Improved Reproducibility and Stability [J].ADVANCED MATERIALS,2018,30(52).
  • APA:
    Wei Jing,Guo Fengwan,Wang Xi,Xu Kun,&Xu Dongsheng.(2018).SnO2-in-Polymer Matrix for High-Efficiency Perovskite Solar Cells with Improved Reproducibility and Stability .ADVANCED MATERIALS,30(52).
  • MLA:
    Wei Jing, et al. "SnO2-in-Polymer Matrix for High-Efficiency Perovskite Solar Cells with Improved Reproducibility and Stability" .ADVANCED MATERIALS 30,52(2018).
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