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High-Performance Flexible Broadband Photodetector Based on Organolead Halide Perovskite

机译：基于有机卤化物钙钛矿的高性能柔性宽带光电探测器

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摘要

Organolead halide perovskites have attracted extensive attentions as light harvesting materials for solar cells recently, because of its high charge-carrier mobilities, high photoconversion efficiencies, low energy cost, ease of deposition, and so on. Herein, with CH_3NH_3PbI_3 film deposited on flexible ITO coated substrate, the first organolead halide perovskite based broadband photodetector is demonstrated. The organolead halide perovskite photodetector is sensitive to a broadband wavelength from the ultraviolet light to entire visible light, showing a photo-responsivity of 3.49 A W~(-1) 0.0367 A W~(-1), an external quantum efficiency of 1.19×10~3%, 5.84% at 365 nm and 780 nm with a voltage bias of 3 V, respectively. Additionally, the as-fabricated photodetector exhibit excellent flexibility and robustness with no obvious variation of photocurrent after bending for several times. The organolead halide perovskite photodetector with high sensitivity, high speed and broad spectrum photoresponse is promising for further practical applications. And this platform creates new opportunities for the development of low-cost, solution-processed and high-efficiency photodetectors.
机译：近年来，有机油卤化物钙钛矿因其高的载流子迁移率，高的光转换效率，低的能源成本，易于沉积等而作为太阳能电池的光收集材料受到了广泛的关注。在本文中，通过在柔性ITO涂层基板上沉积CH_3NH_3PbI_3膜，展示了第一款基于卤化钙铅的有机钙钛矿型宽带光电探测器。有机卤化物钙钛矿型光电探测器对从紫外光到整个可见光的宽带波长敏感，显示出3.49 AW〜（-1）0.0367 AW〜（-1）的光响应度，外部量子效率为1.19×10〜。在365 nm和780 nm处分别为3％，5.84％，电压偏置为3V。另外，所制造的光电探测器表现出优异的柔韧性和鲁棒性，并且在弯曲几次之后光电流没有明显变化。具有高灵敏度，高速度和广谱光响应的有机铅卤化物钙钛矿光电探测器有望用于进一步的实际应用。这个平台为开发低成本，溶液处理和高效光电探测器创造了新的机遇。

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  • 来源
    《Advanced Functional Materials》 |2014年第46期|7373-7380|共8页
  • 作者

    Xin Hu; Xiaodong Zhang; Lin Liang; Jian Bao; Shuang Li; Wenlong Yang; Yi Xie;

  • 作者单位

    Hefei National Laboratory for Physical Science at Microscale Collaborative Innovation Center of Chemistry for Energy Materials University of Science and Technology of China Hefei, Anhui 230026, P. R. China;

    Hefei National Laboratory for Physical Science at Microscale Collaborative Innovation Center of Chemistry for Energy Materials University of Science and Technology of China Hefei, Anhui 230026, P. R. China;

    Hefei National Laboratory for Physical Science at Microscale Collaborative Innovation Center of Chemistry for Energy Materials University of Science and Technology of China Hefei, Anhui 230026, P. R. China;

    Hefei National Laboratory for Physical Science at Microscale Collaborative Innovation Center of Chemistry for Energy Materials University of Science and Technology of China Hefei, Anhui 230026, P. R. China;

    Hefei National Laboratory for Physical Science at Microscale Collaborative Innovation Center of Chemistry for Energy Materials University of Science and Technology of China Hefei, Anhui 230026, P. R. China;

    Hefei National Laboratory for Physical Science at Microscale Collaborative Innovation Center of Chemistry for Energy Materials University of Science and Technology of China Hefei, Anhui 230026, P. R. China;

    Hefei National Laboratory for Physical Science at Microscale Collaborative Innovation Center of Chemistry for Energy Materials University of Science and Technology of China Hefei, Anhui 230026, P. R. China;

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