Hybrid organolead halide perovskite microwire arrays/single CdSe nanobelt for a high-performance photodetector
Hybrid organolead halide perovskite microwire arrays/single CdSe nanobelt for a high-performance photodetector
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DOI：
10.1016/j.cej.2020.126779
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发表时间：
2021-02
影响因子：
15.1
通讯作者：
Wenping Ren;Q. Tan;Qianjin Wang;Yingkai Liu
中科院分区：
文献类型：
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作者：
Wenping Ren;Q. Tan;Qianjin Wang;Yingkai Liu
将有机-无机卤化物钙钛矿与半导体材料相结合的杂化方法被认为是提高光电探测器灵敏度和更宽光谱响应的有效途径。在这里，基于混合有机铅卤化物钙钛矿微丝阵列（CH 3 NH3 PbI 3 MAs）/单硒化镉纳米带（CdSe NB）的光电探测器已成功地制造和表征的第一次通过一步结合热蒸发的方法。这种混合结构可以促进光致发光中产生的电子-空穴对的有效分离，从而表现出惊人的光电性能。光暗电流比高达2.152 × 103，响应率、外量子效率和光电探测率分别为69.11A/W、11000%和8.6 × 1012 Jones。器件的上升时间和衰减时间分别为0.81ms和0.77ms。与其他CH_3NH_3PbI_3/半导体杂化材料相比，CH_3NH_3PbI_3 MAs/单CdSe NB杂化材料具有优异的光电性能，是一种很有前途的光电应用材料。
The hybrid approach by combiningorganic–inorganic halide perovskite withsemiconductor materials is considered as an effective route in improvingphotosensitivity and broader spectral response of the photodetector. Here, a photodetector based on hybrid organolead halide perovskite microwire arrays (CH3NH3PbI3MAs)/single Cadmium Selenide nanobelt (CdSe NB) has been successfully fabricated and characterized for the first time by one-step methods combining thermal evaporation. The hybrid structure can promote the effective separation of the generated electron-hole pairs in photoluminescence and thus exhibits an amazing optoelectric performance. The photo-to-dark current ratio is as high as 2.152 × 103, the responsivity, external quantum efficiency and photodetectivity are 69.11A/W, 11000% and 8.6 × 1012Jones, respectively. Besides, the rise and decay time of the device are 0.81 ms and 0.77 ms, respectively. The excellent optoelectronic properties compared to those of other CH3NH3PbI3/semiconductor hybrids indicate CH3NH3PbI3MAs/single CdSe NB hybrids are promising building blocks for optoelectronic applications.