Affiliation:
1. School of Mechanical and Precision Instrument Engineering Xi'an University of Technology Xi'an 710048 China
2. Shaanxi Joint Lab of Graphene, State Key Laboratory of Photon‐Technology in Western China Energy, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics and Photon Technology Northwest University Xi'an 710069 China
Abstract
AbstractFlexible 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 (MoTe2) based photoelectrochemical photodetectors are successfully assembled by liquid phase exfoliation accompanied with the electrophoretic deposited method. This MoTe2‐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 MoTe2 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 Iph 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.
Funder
National Natural Science Foundation of China
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry