期刊
MEASUREMENT
卷 149, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.measurement.2019.106982
关键词
Semiconductors; TiO2 nanorods; NiO nanosheets; Immersion route; Photosensor; Electronic materials
资金
- ASEAN-India Research & Training Fellowship Scheme [IMRC/AISTDF/RD/P-1/2017]
- Ministry of Education Malaysia [FRGS/1/2018/TK04/UITM/02/23]
- Institute of Research Management and Innovation (IRMI) of UiTM
- International Islamic University Malaysia (IIUM)
A coupling heterostructure consisting of nickel oxide nanosheets (NNS) and titanium dioxide nanorod arrays (TNAs) was fabricated for self-powered solid-state ultraviolet (UV) photosensor applications. By controlling the thickness of the NNS layer by via varying the growth time from 1 to 5 h at a deposition temperature of 90 degrees C, the coupling NNS/TNAs heterojunction films were formed and their structural, optical, electrical and UV photoresponse properties were investigated. The photocurrent measured from the fabricated self-powered UV photosensor was improved by increasing the thickness of NNS from 140 to 170 nm under UV irradiation (365 nm, 750 mu Wcm(-2)) at 0 V bias. A maximum photocurrent density of 0.510 mu A.cm(-2) was achieved for a sample with a NNS thickness of 170 nm and prepared with a 3 h NNS growth time. Our results showed that the fabricated NNS/TNAs heterojunction has potential applications for self-powered UV photosensors. (C) 2019 Elsevier Ltd. All rights reserved.
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