光探测
材料科学
光电探测器
异质结
宽带
石墨烯
光电子学
极化(电化学)
电场
红外线的
纳米技术
光学
量子力学
物理
物理化学
化学
作者
Zengda Wang,Peiyu Zeng,Shuojie Hu,Xiaomei Wu,Jiaoyan He,Zhangting Wu,Wenhui Wang,Peng Zheng,Hui Zheng,Liang Zheng,Dexuan Huo,Yang Zhang
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2021-08-06
卷期号:32 (46): 465201-465201
被引量:23
标识
DOI:10.1088/1361-6528/ac1b53
摘要
Two-dimensional van der Waals heterostructures can combine properties of individual materials to enable high-performance photodetection. Here, a novel ReS2/graphene/WSe2 heterostructure, prepared by dry transfer, demonstrates air-stable, high-performance, polarization-sensitive, and broadband photodetection. Dark current can be strongly suppressed by the built-in electric field of the heterostructure. The specific detectivities are up to 1010 Jones and 109 Jones under zero and reverse bias, respectively. Response time is on the order of a millisecond. The polarization-sensitive photodetection has been observed in the heterostructure due to the low lattice symmetry of ReS2. Broadband photoresponse from visible to infrared range has been demonstrated. A high photoresponsivity of 1.02 A W−1 is achieved for illumination at the wavelength of 785 nm. This work provides a viable approach toward future high-performance, air-stable, and polarization-sensitive broadband photodetectors.
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