Self-powered solar-blind ZnGa2O4 UV photodetector with ultra-fast response speed

doi:10.1016/j.sna.2020.112354

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	Self-powered solar-blind ZnGa2O4 UV photodetector with ultra-fast response speed
	D. Y. Han,K. W. Liu,Q. C. Hou,X. Chen,J. L. Yang,B. H. Li,Z. Z. Zhang,L. Liu and D. Z. Shen
刊名	Sensors and Actuators a-Physical
	2020
卷号	315 页码:7
ISSN号	0924-4247
DOI	10.1016/j.sna.2020.112354
英文摘要	A novel self-powered solar-blind ZnGa2O4 ultraviolet (UV) photodetector has been constructed by fab-ricating asymmetric pairs of Au Schottky electrodes on the ZnGa2O4 film. The current-voltage curve of the device exhibits an obvious rectifying characteristic with a rectification ratio of 11.3 at +/- 8 V. At 0 V bias, the peak responsivity of our device at 246 nm is about 22.2 mA/W with an UV-vis rejection ratio of 1.3x10(4), indicating the excellent self-powered solar-blind UV photodetector performance. More interestingly, the rise time and decay time of the device are only 10 ns and 30 ns, respectively, which are much faster than that of any other previously reported self-powered solar-blind UV photodetectors to the best of our knowledge. The ultra-fast response speed of the device should be attributed to the asymmetric Schottky junctions and the high crystalline quality of our ZnGa2O4 film with low trap density. Our work provides a new method to constructing high-performance self-powered solar-blind UV photodetectors. (C) 2020 Elsevier B.V. All rights reserved.
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语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/64875]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	D. Y. Han,K. W. Liu,Q. C. Hou,X. Chen,J. L. Yang,B. H. Li,Z. Z. Zhang,L. Liu and D. Z. Shen. Self-powered solar-blind ZnGa2O4 UV photodetector with ultra-fast response speed[J]. Sensors and Actuators a-Physical,2020,315:7.
APA	D. Y. Han,K. W. Liu,Q. C. Hou,X. Chen,J. L. Yang,B. H. Li,Z. Z. Zhang,L. Liu and D. Z. Shen.(2020).Self-powered solar-blind ZnGa2O4 UV photodetector with ultra-fast response speed.Sensors and Actuators a-Physical,315,7.
MLA	D. Y. Han,K. W. Liu,Q. C. Hou,X. Chen,J. L. Yang,B. H. Li,Z. Z. Zhang,L. Liu and D. Z. Shen."Self-powered solar-blind ZnGa2O4 UV photodetector with ultra-fast response speed".Sensors and Actuators a-Physical 315(2020):7.