A high performance self-powered heterojunction photodetector based on NiO nanosheets on an n-Si (100) modified substrate

被引:9
|
作者
Zhang, Yongfang [1 ]
Ji, Tao [2 ]
Zhu, Jinqi [1 ]
Zou, Rujia [1 ]
Hu, Junqing [1 ,2 ]
机构
[1] Donghua Univ, Coll Mat Sci & Engn, Coll Informat Sci & Technol, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China
[2] Shenzhen Technol Univ, Coll Hlth Sci & Environm Engn, Shenzhen 518118, Peoples R China
基金
中国国家自然科学基金;
关键词
Semiconductors; Energy storage and conversion; Photodetector; Heterojunction; Self-powered;
D O I
10.1016/j.matlet.2020.128995
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A self-powered ultraviolet-visible photodetector based on NiO/Si heterojunctions made from NiO nanosheets on a Si (100) modified substrate was successfully manufactured via a facile hydrothermal method and subsequent calcination process. The fabricated detectors not only response to ultraviolet (UV) and visible light, but also possess excellent photocurrents and a lower dark current. The good performance, i.e., the external quantum efficiency (EQE) of-22.4% and 33.1% under 350 nm and 600 nm, respectively, at zero bias, superior to most reported NiO/Si photodetectors, could be ascribed to the good crystalline NiO nanosheets and the suitable n-Si (100) substrate. Therefore, as-fabricated self-powered broadband detectors have a great potential application in wearable and portable devices. (c) 2020 Elsevier B.V. All rights reserved.
引用
收藏
页数:5
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