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首页> 外文期刊>Organic Electronics >Effect of preheated, delayed annealing process on the ultrafast carriers dynamics of perovskite films using ultrafast absorption spectroscopy
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Effect of preheated, delayed annealing process on the ultrafast carriers dynamics of perovskite films using ultrafast absorption spectroscopy

机译：使用超氮吸收光谱法预热，延迟退火过程对钙钛矿薄膜超快载体动态的影响

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摘要

Organic halogenated perovskite material, as an optical material with great development potential, shows excellent application value in the field of solar cells. Solar cells based on organometal halide perovskites possess photoelectricity efficiencies exceeding 25.2%, however, they suffer from oxidization and degradation. In this paper, we present a fabrication technique based on the preheating treatment and delayed annealing to obtain high quality perovskite films. Using the femtosecond transient absorption (TA) spectroscopy, we investigate the transport and lifetime of internal carriers of perovskite films prepared by the preheating treatment and delayed annealing process. The experimental results show that the perovskite film obtained by the preheated treatment is easier to control the carrier recombination rate than the perovskite film obtained by the conventional method. Furthermore, perovskite film with delayed annealing 1 h has a shorter transport time of carriers from the perovskite layer to the hole transport layer, effectively avoiding the direct recombination of carriers. The novel method put forward in this work enables the stabilization and high efficiency of perovskite solar cells.
机译：有机卤化钙钛矿材料，作为具有很大发展潜力的光学材料，在太阳能电池领域中显示出优异的应用价值。基于有机卤化物钙酸盐的太阳能电池具有超过25.2％的光电效率，然而它们患有氧化和降解。本文介绍了一种基于预热处理和延迟退火的制造技术，获得高质量的钙钛矿薄膜。使用飞秒瞬态吸收（TA）光谱，我们研究了通过预热处理和延迟退火过程制备的钙钛矿膜的内载体的运输和寿命。实验结果表明，通过预热处理获得的钙钛矿膜更容易控制通过通过常规方法获得的钙钛矿膜的载体重组率。此外，具有延迟退火1 H的钙钛矿膜具有从钙钛矿层到空穴传输层的载流子的较短运输时间，有效地避免了载体的直接重组。本作工作中提出的新型方法能够稳定和高效率的钙钛矿太阳能电池。

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  • 来源
    《Organic Electronics》 |2020年第9期|105758.1-105758.6|共6页
  • 作者

    Hongsheng Zhai; Yibo Li; Yonggang Yang; Minghuan Cui; Yufang Liu; Chaochao Qin;

  • 作者单位

    Henan Key Laboratory of Infrared Materials & Spectrum Measures and Applications School of Physics Henan Normal University Xinxiang Henan 453007 PR China School of Physics Henan Normal University Xinxiang Henan 453007 China;

    Henan Key Laboratory of Infrared Materials & Spectrum Measures and Applications School of Physics Henan Normal University Xinxiang Henan 453007 PR China School of Physics Henan Normal University Xinxiang Henan 453007 China;

    Henan Key Laboratory of Infrared Materials & Spectrum Measures and Applications School of Physics Henan Normal University Xinxiang Henan 453007 PR China School of Physics Henan Normal University Xinxiang Henan 453007 China;

    Henan Key Laboratory of Infrared Materials & Spectrum Measures and Applications School of Physics Henan Normal University Xinxiang Henan 453007 PR China School of Physics Henan Normal University Xinxiang Henan 453007 China;

    Henan Key Laboratory of Infrared Materials & Spectrum Measures and Applications School of Physics Henan Normal University Xinxiang Henan 453007 PR China School of Physics Henan Normal University Xinxiang Henan 453007 China;

    School of Physics Henan Normal University Xinxiang Henan 453007 China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ultrafast transient absorption; Annealing; Perovskite; Charge recombination;

    机译：超快瞬态吸收;退火;Perovskite;电荷重组;

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