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Improving the efficiency of perovskite solar cells through optimization of the CH3NH3PbI3 film growth in solution process method

机译：通过溶液法中CH3NH3PbI3膜生长的优化来提高钙钛矿太阳能电池的效率

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摘要

Perovskite-structured organic-inorganic materials such as CH3NH3PbI3 are attracting much interest in the scientific community because of their abilities to function as revolutionary light harvesters and charge transfer materials for solar cells. To achieve high power conversion efficiency (PCE), it is critical to optimize the perovskite film layer. This paper reports the temperature and concentration controls on the two-step solution process. A diffusion-controlled growth mechanism is proposed for this process in tuning the morphology and purity of the perovskite film, which are proven to be important factors contributing to the photovoltaic performance. The highest PCE of 11.92% is achieved with an optimized perovskite crystal size of similar to 150 nm and an appropriate amount of residual PbI2. This study sheds light on the design and fabrication of highly efficient, low-cost, solution-processed perovskite solar cells. (C) 2015 Elsevier B.V. All rights reserved.
机译：钙钛矿结构的有机无机材料（例如CH3NH3PbI3）因其具有革命性的光收集器和太阳能电池电荷转移材料的功能而引起了科学界的极大兴趣。为了实现高功率转换效率（PCE），优化钙钛矿薄膜层至关重要。本文报告了两步求解过程中的温度和浓度控制。针对该过程提出了一种扩散控制的生长机制，以调节钙钛矿薄膜的形态和纯度，这被证明是有助于光伏性能的重要因素。通过优化的钙钛矿晶体尺寸接近150 nm和适量的残留PbI2，可以实现11.92％的最高PCE。这项研究为高效，低成本，固溶处理的钙钛矿太阳能电池的设计和制造提供了启示。 （C）2015 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2015年第30期|560-566|共7页
  • 作者

    Zhao Ying; Liu Jian; Lu Xinrong; Gao Yandong; You Xiaozeng; Xu Xiangxing;

  • 作者单位

    Nanjing Univ, Sch Chem & Chem Engn, Collaborat Innovat Ctr Adv Microstruct, State Key Lab Coordinat Chem, Nanjing 210093, Jiangsu, Peoples R China;

    Nanjing Univ, Sch Chem & Chem Engn, Collaborat Innovat Ctr Adv Microstruct, State Key Lab Coordinat Chem, Nanjing 210093, Jiangsu, Peoples R China;

    Nanjing Univ, Sch Chem & Chem Engn, Collaborat Innovat Ctr Adv Microstruct, State Key Lab Coordinat Chem, Nanjing 210093, Jiangsu, Peoples R China;

    Nanjing Univ, Sch Chem & Chem Engn, Collaborat Innovat Ctr Adv Microstruct, State Key Lab Coordinat Chem, Nanjing 210093, Jiangsu, Peoples R China;

    Nanjing Univ, Sch Chem & Chem Engn, Collaborat Innovat Ctr Adv Microstruct, State Key Lab Coordinat Chem, Nanjing 210093, Jiangsu, Peoples R China;

    Nanjing Univ, Sch Chem & Chem Engn, Collaborat Innovat Ctr Adv Microstruct, State Key Lab Coordinat Chem, Nanjing 210093, Jiangsu, Peoples R China|Nanjing Normal Univ, Sch Chem & Mat Sci, Nanjing 210023, Jiangsu, Peoples R China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    Organic-inorganic perovskite; Solar cell; Two step solution method; Morphology; Diffusion controlled growth; Thin film;

    机译：有机-无机钙钛矿;太阳能电池;两步法;形貌;扩散控制生长;薄膜;

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