Vertical geometry ultraviolet photodetectors with high photosensitivity based on nanocrystalline TiO2 films

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	Vertical geometry ultraviolet photodetectors with high photosensitivity based on nanocrystalline TiO2 films
	W. F. Xiang; P. R. Yang; A. J. Wang; K. Zhao; H. Ni; S. X. Zhong
	2012
发表期刊	Thin Solid Films
ISSN	0040-6090
卷号	520 期号:24 页码:7144-7146
摘要	Porous and dense nanocrystalline TiO2 films grown on F:SnO substrates used in vertical geometry ultraviolet photodetectors are investigated. Compared with a detector with a dense nanocrystalline TiO2 film (D-detector), a detector with a porous nanocrystalline TiO2 film (P-detector) exhibits one order of magnitude higher responsivity due to a light scattering effect. In addition, the vertical geometry detectors show a fast response time. The rise time and decay time of the P-detector and D-detector are 19 and 136 ns, and 14 and 100 ns, respectively, which are six orders of magnitude faster than those of lateral geometry detectors based on dense nanocrystalline TiO2 films. It is a result of a decreased mobility fluctuation. (C) 2012 Elsevier B.V. All rights reserved.
部门归属	[xiang, w. f.; wang, a. j.; zhao, k.; zhong, s. x.] china univ petr, state key lab heavy oil proc, beijing 102249, peoples r china. [xiang, w. f.; yang, p. r.; wang, a. j.; zhao, k.; ni, h.] china univ petr, coll sci, lab opt sensing & detecting technol, beijing 102249, peoples r china. [zhao, k.] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;zhao, k (reprint author), china univ petr, state key lab heavy oil proc, beijing 102249, peoples r china.;zhk@cup.edu.cn
关键词	Dense Thin Films Porous Thin Films Nanocrystalline Films Titanium Dioxide Uv Detector Hydrothermal Deposition Spin Coating Dye
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60347
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. F. Xiang,P. R. Yang,A. J. Wang,et al. Vertical geometry ultraviolet photodetectors with high photosensitivity based on nanocrystalline TiO2 films[J]. Thin Solid Films,2012,520(24):7144-7146.
APA	W. F. Xiang,P. R. Yang,A. J. Wang,K. Zhao,H. Ni,&S. X. Zhong.(2012).Vertical geometry ultraviolet photodetectors with high photosensitivity based on nanocrystalline TiO2 films.Thin Solid Films,520(24),7144-7146.
MLA	W. F. Xiang,et al."Vertical geometry ultraviolet photodetectors with high photosensitivity based on nanocrystalline TiO2 films".Thin Solid Films 520.24(2012):7144-7146.