Performance Improvement of Ultraviolet Sensor of ZnO Nanorod Arrays
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概要
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In this letter, large-area, high-quality, evenly distributed, and vertically oriented Na-doped ZnO nanorod arrays (NRAs:Na) are prepared by chemical vapor deposition. The properties of the relevant ultraviolet sensors are studied, indicating that by providing an intrinsic ZnO coating via the hydrothermal method and annealing treatment, the performance of the sensors could be improved dramatically. Photoluminescence analyses show that Na doping suppressed the green emission of NRAs:Na, which is commonly ascribed to the singly V<inf>\text{O</inf>located at the surface of the nanorods. For the optimized NRAs:Na sensors with a core--shell structure, the V<inf>\text{O</inf>--O<inf>\text{i</inf>annihilation mechanism is proposed to interpret the reduction of the persistent photocurrent.
- 2013-12-25
著者
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Yang Xiaopeng
School Of Information And Electronics Beijing Institute Of Technology
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Li Xia
State Key Laboratory Of Plant Cell And Chromosome Engineering Center For Agricultural Resources Rese
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Li Xia
State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
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Cao Bingqiang
School of Material Science and Engineering, University of Jinan, Jinan 250022, China
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Qiu Zhiwen
School of Material Science and Engineering, University of Jinan, Jinan 250022, China
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Lu Jianguo
State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
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Yang Xiaopeng
School of Material Science and Engineering, University of Jinan, Jinan 250022, China
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