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Published in: Journal of Nanoparticle Research 12/2018

01-12-2018 | Research Paper

UV photodetector based on polycrystalline SnO2 nanotubes by electrospinning with enhanced performance

Authors: Yaohua Li, Wenxiu Huang, Hui Liu, Jinshou Wang, Li Tian, Shenghui Zhang

Published in: Journal of Nanoparticle Research | Issue 12/2018

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Abstract

UV (ultraviolet) photodetectors with high performance have a wide range of applications such as environmental monitoring and water sterilization. Herein, we have demonstrated that the visible-blind UV photodetectors based on polycrystalline SnO2 nanotubes by electrospinning combined the advantages of low dark current and high photocurrent-to-dark current ratio. The optimized photodetector based on SnO2 nanotube film showed a strong rise in current amplitude; the photocurrent was 25.60 nA, about 850 times larger than the dark current of 0.03 nA, under a voltage as small as 1.0 V and 320 nm illumination at 75 μW/cm2. In addition, these devices presented improved characteristic on time responses. Investigations indicated that the features of high signal-to-noise ratio and relatively fast response speed are strongly relied upon the band-edge modulation along the axial direction of nanotube, where Schottky barriers are formed among the grain interfaces of polycrystalline SnO2 nanoparticles, together with the processes of oxygen adsorption/desorption in air. These results suggest that the polycrystalline SnO2 nanotube is a potential candidate for the fabrication of photodetector with low cost and high performance.

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Literature
go back to reference Li YM, Song Y, Jiang YC, Hu MX, Pan ZC, Xu XJ, Chen HY, Li YS, Hu LF, Fang XS (2017) Optoelectronic devices: solution-growth strategy for large-scale “CuGaO2 nanoplate/ZnS microsphere” heterostructure arrays with enhanced UV adsorption and optoelectronic properties. Adv Funct Mater 27:1701066–1701075. https://doi.org/10.1002/adfm.201770140 CrossRef Li YM, Song Y, Jiang YC, Hu MX, Pan ZC, Xu XJ, Chen HY, Li YS, Hu LF, Fang XS (2017) Optoelectronic devices: solution-growth strategy for large-scale “CuGaO2 nanoplate/ZnS microsphere” heterostructure arrays with enhanced UV adsorption and optoelectronic properties. Adv Funct Mater 27:1701066–1701075. https://​doi.​org/​10.​1002/​adfm.​201770140 CrossRef
go back to reference Wu J, Zeng D, Wang X, Zeng L, Huang Q, Tang G, Xie C (2014) Mechanistic insights into formation of SnO2 nanotubes: asynchronous decomposition of poly(vinylpyrrolidone) in electrospun fibers during calcining process. Langmuir 30:11183–11189. https://doi.org/10.1021/la5017559 CrossRef Wu J, Zeng D, Wang X, Zeng L, Huang Q, Tang G, Xie C (2014) Mechanistic insights into formation of SnO2 nanotubes: asynchronous decomposition of poly(vinylpyrrolidone) in electrospun fibers during calcining process. Langmuir 30:11183–11189. https://​doi.​org/​10.​1021/​la5017559 CrossRef
Metadata
Title
UV photodetector based on polycrystalline SnO2 nanotubes by electrospinning with enhanced performance
Authors
Yaohua Li
Wenxiu Huang
Hui Liu
Jinshou Wang
Li Tian
Shenghui Zhang
Publication date
01-12-2018
Publisher
Springer Netherlands
Published in
Journal of Nanoparticle Research / Issue 12/2018
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-018-4440-y

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