Boosting the performance of crossed ZnO microwire UV photodetector by mechanical contact homo-interface barrier

doi:10.1088/1674-1056/ac80b0

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	Boosting the performance of crossed ZnO microwire UV photodetector by mechanical contact homo-interface barrier
	Y. Z. Liu; K. W. Liu; J. L. Yang; Z. Cheng; D. Y. Han; Q. Ai; X. Chen; Y. X. Zhu; B. H. Li; L. Liu and D. Z. Shen
	2022
发表期刊	Chinese Physics B
ISSN	1674-1056
卷号	31 期号:10 页码:5
摘要	One-dimensional (1D) micro/nanowires of wide band gap semiconductors have become one of the most promising blocks of high-performance photodetectors. However, in the axial direction of micro/nanowires, the carriers can transport freely driven by an external electric field, which usually produces large dark current and low detectivity. Here, an UV photodetector built from three cross-intersecting ZnO microwires with double homo-interfaces is demonstrated by the chemical vapor deposition and physical transfer techniques. Compared with the reference device without interface, the dark current of this ZnO double-interface photodetector is significantly reduced by nearly 5 orders of magnitude, while the responsivity decreases slightly, thereby greatly improving the normalized photocurrent-to-dark current ratio. In addition, ZnO double-interface photodetector exhibits a much faster response speed (similar to 0.65 s) than the no-interface device (similar to 95 s). The improved performance is attributed to the potential barriers at the microwire-microwire homo-interfaces, which can regulate the carrier transport. Our findings in this work provide a promising approach for the design and development of high-performance photodetectors.
DOI	10.1088/1674-1056/ac80b0
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收录类别	sci ; ei
语种	英语
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/66449
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	Y. Z. Liu,K. W. Liu,J. L. Yang,et al. Boosting the performance of crossed ZnO microwire UV photodetector by mechanical contact homo-interface barrier[J]. Chinese Physics B,2022,31(10):5.
APA	Y. Z. Liu.,K. W. Liu.,J. L. Yang.,Z. Cheng.,D. Y. Han.,...&L. Liu and D. Z. Shen.(2022).Boosting the performance of crossed ZnO microwire UV photodetector by mechanical contact homo-interface barrier.Chinese Physics B,31(10),5.
MLA	Y. Z. Liu,et al."Boosting the performance of crossed ZnO microwire UV photodetector by mechanical contact homo-interface barrier".Chinese Physics B 31.10(2022):5.

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