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Effect of surface oxygen vacancy defects on the performance of ZnO quantum dots ultraviolet photodetector*

文献类型：期刊论文

作者H. Y. Ma; K. W. Liu; Z. Cheng; Z. Y. Zheng; Y. Z. Liu; P. X. Zhang; X. Chen; D. M. Liu; L. Liu and D. Z. Shen
刊名Chinese Physics B
出版日期2021
卷号30期号:8页码:5
ISSN号1674-1056
DOI10.1088/1674-1056/ac0131
英文摘要The slower response speed is the main problem in the application of ZnO quantum dots (QDs) photodetector, which has been commonly attributed to the presence of excess oxygen vacancy defects and oxygen adsorption/desorption processes. However, the detailed mechanism is still not very clear. Herein, the properties of ZnO QDs and their photodetectors with different amounts of oxygen vacancy (V-O) defects controlled by hydrogen peroxide (H2O2) solution treatment have been investigated. After H2O2 solution treatment, V-O concentration of ZnO QDs decreased. The H2O2 solution-treated device has a higher photocurrent and a lower dark current. Meanwhile, with the increase in V-O concentration of ZnO QDs, the response speed of the device has been improved due to the increase of oxygen adsorption/desorption rate. More interestingly, the response speed of the device became less sensitive to temperature and oxygen concentration with the increase of V-O defects. The findings in this work clarify that the surface V-O defects of ZnO QDs could enhance the photoresponse speed, which is helpful for sensor designing.
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源URL[http://ir.ciomp.ac.cn/handle/181722/65196]  
专题中国科学院长春光学精密机械与物理研究所
推荐引用方式
GB/T 7714		 H. Y. Ma,K. W. Liu,Z. Cheng,et al. Effect of surface oxygen vacancy defects on the performance of ZnO quantum dots ultraviolet photodetector*[J]. Chinese Physics B,2021,30(8):5.
APA H. Y. Ma.,K. W. Liu.,Z. Cheng.,Z. Y. Zheng.,Y. Z. Liu.,...&L. Liu and D. Z. Shen.(2021).Effect of surface oxygen vacancy defects on the performance of ZnO quantum dots ultraviolet photodetector*.Chinese Physics B,30(8),5.
MLA H. Y. Ma,et al."Effect of surface oxygen vacancy defects on the performance of ZnO quantum dots ultraviolet photodetector*".Chinese Physics B 30.8(2021):5.

入库方式： OAI收割

来源：长春光学精密机械与物理研究所

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