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

页码：5976 / 5981

页数：6

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