An Ultrahigh Responsivity (9.7 mA W-1) Self-Powered Solar-Blind Photodetector Based on Individual ZnO-Ga2O3 Heterostructures

被引：745
作者：
Zhao, Bin [1 ]
Wang, Fei [2 ]
Chen, Hongyu [1 ]
Zheng, Lingxia [1 ]
Su, Longxing [1 ]
Zhao, Dongxu [2 ]
Fang, Xiaosheng [1 ]
机构：
[1] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China
[2] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Luminescence & Applicat, Changchun 130033, Peoples R China
来源：
ADVANCED FUNCTIONAL MATERIALS | 2017年 / 27卷 / 17期
基金：
中国国家自然科学基金;
关键词：
CORE-SHELL NANOWIRES; ULTRAVIOLET PHOTODETECTORS; CUTOFF WAVELENGTH; UV PHOTODETECTOR; THIN-FILM; FABRICATION; EFFICIENT; DETECTORS; HETEROJUNCTIONS; NANOSTRUCTURES;
D O I：
10.1002/adfm.201700264
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Highly crystallized ZnO-Ga2O3 core-shell heterostructure microwire is synthesized by a simple one-step chemical vapor deposition method, and constructed into a self-powered solar-blind (200-280 nm) photodetector with a sharp cutoff wavelength at 266 nm. The device shows an ultrahigh responsivity (9.7 mA W-1) at 251 nm with a high UV/visible rejection ratio (R-251 nm/R-400 nm) of 6.9 x 10(2) under zero bias. The self-powered device has a fast response speed with rise time shorter than 100 mu s and decay time of 900 mu s, respectively. The ultrahigh responsivity, high UV/visible rejection ratio, and fast response speed make it highly suitable in practical self-powered solar-blind detection. Additinoally, this microstructure heterojunction design method would provide a new approach to realize the highperformance self-powered photodetectors.
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页数：8
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