光电探测器
材料科学
光电子学
响应度
光学
物理
作者
Xiang Xu,Ying Wang,Young Hoon Ji,Zhijian Chen,Chunhui Lu,Xinlong Xu,Dengxin Hua
出处
期刊:Small
[Wiley]
日期:2024-01-31
标识
DOI:10.1002/smll.202308590
摘要
Abstract Flexible broadband photodetectors are desired but challenging to be fabricated for next‐generation wearable intelligent optoelectronic devices. Considering the narrow bandgap and strong light absorption, molybdenum telluride (MoTe 2 ) based photoelectrochemical photodetectors are successfully assembled by liquid phase exfoliation accompanied with the electrophoretic deposited method. This MoTe 2 ‐based photodetector shows a broadband detection in ultraviolet–near‐infrared band, long‐term stability within 18000 s, and fast response in millisecond‐level (response time≈19 ms, recovery time≈26 ms). More importantly, even though the MoTe 2 photodetector is bent and twisted at a high degree for several hundred times, it still shows excellent flexibility with stable on‐off switching characteristics. Additionally, this photodetector displays a good response for rotation angles in the range from 0° to 360°, and the extracted I ph maintain almost the same value approximately 0.97 µA cm −2 , suggesting an omnidirectional detection capability. This work demonstrates the proposed flexible photoanode shows a great potential in future broadband omnidirectional detection systems.
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