High sensitivity and rapid response ultraviolet photodetector of a tetragonal CsPbCl3 perovskite single crystal

High sensitivity and rapid response ultraviolet photodetector of a tetragonal CsPbCl3 perovskite single crystal
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四方CsPbCl3钙钛矿单晶的高灵敏度快速响应紫外光电探测器

DOI:
10.1364/ome.388429
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发表时间:
2020-06
影响因子:
2.8
通讯作者:
Pan Shusheng
Pan Shusheng
中科院分区:
材料科学3区
文献类型:
--
作者:
Rao Ziyue;Liang Wenyi;Huang Haiming;Ge Jun;Wang Weiliang;Pan Shusheng

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无机钙钛矿由于其优异的光电性能而引起了人们极大的兴趣。低带隙卤化物钙钛矿半导体少得多,CsPbCl 3是钙钛矿家族中的宽带隙半导体之一。采用快速蒸发法制备了具有四角晶系结构的CsPbCl_3钙钛矿单晶,其直接带隙为2.86 ± 0.3 eV,直径为0.5 mm。研制了一种基于CsPbCl_3单晶的紫外光探测器,在280-435 nm的宽波长范围内具有光响应,在410 nm处的最大响应率为0.272 A/W。  器件的上升和衰减响应时间分别小于28.4和2.7 ms。 这种CsPbCl_3光电探测器的良好性能预示着其在紫外光电子器件领域的应用前景。
Inorganic perovskite has attracted great interest due to its excellent optoelectronic properties. There are much less low band gap halide perovskite semiconductors, and CsPbCl3 is one of a wide band gap semiconductor in the perovskite family. In this study, a 0.5-mm CsPbCl3 perovskite single crystal with tetragonal structure and a direct band gap of 2.86 ± 0.3 eV is synthesized by flash evaporation of CsCl-PbCl2 solution. An ultraviolet photodetector based on a CsPbCl3 single crystal is fabricated, showing a photoresponse in a wide wavelength range of 280–435 nm, with a maximum responsivity of 0.272 A/W at 410 nm. Rise and decay response times of the device are less than 28.4 and 2.7 ms, respectively. The good performance of this CsPbCl3 photodetector indicates promising applications in the field of UV optoelectronic devices.
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