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Photoresponse of multi-walled carbon nanotube-copper sulfide (MWNT-CuS) hybrid nanostructures
Zhaoyao Zhan1, Chao Liu, Lianxi Zheng
1School of Mechanical and Aerospace Engineering, Nanyang Technological University, Nanyang Ave 50, Singapore 639798.
Physical Chemistry Chemical Physics : PCCP
|October 14, 2011
Abstract:
In situ synthesized MWNT-CuS hybrid nanostructures were fabricated into ultrasensitive photodetectors. Upon exposure to light illumination, the MWNT-CuS devices showed pronounced photocurrent with a response time less than 0.5 s even under zero bias. The response mechanism could be attributed to a fast charge dissociation process at the interfaces of MWNTs and CuS nanoparticles due to the formation of the Schottky junctions.
