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Unraveling the Reasons for Efficiency Loss in Perovskite Solar Cells

机译：阐明钙钛矿型太阳能电池效率损失的原因

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摘要

The effect of the presence of unreacted PbI2 on the perovskite solar cells efficiency is reported. N,N-Dimethylformamide vapor treatment is introduced to study the influence of complete conversion to a power conversion efficiency of the device. It is discovered that the optimized morphology of the PbI2 under layer is essential to form a dense perovskite layer preventing recombination by direct contact between TiO2 and a hole transporting layer, and to increase the charge collection efficiency. The present findings provide an insight into the morphology and growth mechanism of perovskite layer, the correlation between the device performance, and the film deposition process.
机译：据报道，未反应的PbI 2的存在对钙钛矿太阳能电池效率的影响。引入N，N-二甲基甲酰胺蒸气处理以研究完全转换对器件功率转换效率的影响。已经发现，PbI 2底层的最佳形态对于形成致密的钙钛矿层是必不可少的，该钙钛矿层可防止TiO 2与空穴传输层之间的直接接触而复合，并提高电荷收集效率。目前的发现提供了钙钛矿层的形态和生长机理，器件性能和膜沉积过程之间的相关性的见解。

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  • 来源
    《Advanced Functional Materials》 |2015年第25期|3925-3933|共9页
  • 作者

    Lee Yong Hui; Luo Jingshan; Humphry-Baker Robin; Gao Peng; Graetzel Michael; Nazeeruddin Mohammad Khaja;

  • 作者单位

    Ecole Polytech Fed Lausanne, Grp Mol Engn Funct Mat, Inst Chem Sci & Engn, CH-1015 Lausanne, Switzerland;

    Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland;

    Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland;

    Ecole Polytech Fed Lausanne, Grp Mol Engn Funct Mat, Inst Chem Sci & Engn, CH-1015 Lausanne, Switzerland;

    Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland;

    Ecole Polytech Fed Lausanne, Grp Mol Engn Funct Mat, Inst Chem Sci & Engn, CH-1015 Lausanne, Switzerland|King Abdulaziz Univ, CEAMR, Jeddah 21589, Saudi Arabia;

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  • 正文语种 eng
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  • 关键词

    methylammonium lead iodide; PbI2; perovskite; solution process; two-step method;

    机译：甲基铵碘化铅;PbI2;钙钛矿;固溶工艺;两步法;

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