KMS Chongqing Institute of Green and Intelligent Technology, CAS
A strategy of high-sensitivity solar-blind photodetector for fabricating graphene surface modification ZnGa2O4/Ga2O3 core-shell structure nanowire networks | |
Wu, Yutong1,2; Fu, Xie2,3; Zhang, Kun1,2; Tao, Zhiyong4; Fan, Yanxian4; Lu, Wenqiang2,3 | |
2023-06-01 | |
摘要 | One-dimensional core-shell nanowires are considered the optimal choice for high-performance photodetectors with the ideal interfacial area, well-controlled structure, and better light absorption ability. There are lots of research about Ga2O3 wide band gap semiconductors applied in solar-blind photodetectors. However, the defects such as relatively slow response/recovery time and poor response rate have limited its application in photodetectors. In this work, a GaZn2O4/Ga2O3 core-shell nanostructure is successfully prepared by the CVD (Chemical Vapor Deposition) technique. Then, a strategy of MSM solar blind ultraviolet detector based on graphene surface modification core-shell nanowires is proposed. The device has a characteristic of nanowire network structure, interface heterojunction, and Schottky contact. According to the results, a significant performance of the device with 0.1% graphene surface modified ZnGa2O4/Ga2O3 nanowires is achieved, like, the faster response time (rise/ down time, 130 m s/13 m s), and the higher detection capability of the solar-blind ultraviolet detector (responsivity, 64.5 mA/W). Our work provides a facile fabrication procedure to construct a high-performance photodetector. |
关键词 | Solar -blind photodetectors Core -shell structure Interface heterojunction Schottky contact |
DOI | 10.1016/j.ceramint.2023.02.196 |
发表期刊 | CERAMICS INTERNATIONAL |
ISSN | 0272-8842 |
卷号 | 49期号:11页码:18248-18254 |
通讯作者 | Fan, Yanxian(yxfan@guet.edu.cn) ; Lu, Wenqiang(wqlu@cigit.ac.cn) |
收录类别 | SCI |
WOS记录号 | WOS:000988681700001 |
语种 | 英语 |