A self-powered ultraviolet photodetector based on solution-processed p-NiO/n-ZnO nanorod array heterojunction

被引：109
|
作者：
Shen, Yanwei [1 ]
Yan, Xiaoqin [1 ]
Bai, Zhiming [1 ]
Zheng, Xin [1 ]
Sun, Yihui [1 ]
Liu, Yichong [2 ]
Lin, Pei [2 ]
Chen, Xiang [1 ]
Zhang, Yue [1 ,2 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
[2] Univ Sci & Technol Beijing, Key Lab New Energy Mat & Technol, Beijing 100083, Peoples R China
来源：
RSC ADVANCES | 2015年 / 5卷 / 08期
关键词：
UV PHOTODETECTORS; NANOWIRE ARRAYS; PHOTOCURRENT; EFFICIENT; NANOGENERATOR; FABRICATION; EMISSION;
D O I：
10.1039/c4ra12535e
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We report fabrication of an all inorganic, self-powered and rapid-response ultraviolet (UV) photodetector using solution-processed p-NiO/ZnO-nanorod array heterojunction. The device exhibited a fast binary-response with a rise time of 0.23 s and decay time of 0.21 s. A large responsivity of 0.44 mA W-1 was achieved for a 0.4 mW cm(-2) UV light irradiation at a zero-bias voltage. The self-powered performance could be attributed to the proper built-in electric field between ZnO and NiO arising from the well-aligned energy-band structure of the device, which gives rise to a photovoltaic effect.
引用
收藏
页码：5976 / 5981
页数：6
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