A fast humidity sensor based on Li⁺-doped SnO₂ one-dimensional porous nanofibers

Yin, Min, Yang, Fang, Wang, Zhaojie, Zhu, Miao, Liu, Ming, Xu, Xiuru and Li, Zhenyu 2017, A fast humidity sensor based on Li⁺-doped SnO₂ one-dimensional porous nanofibers, Materials, vol. 10, no. 5, pp. 1-9, doi: 10.3390/ma10050535.

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Title A fast humidity sensor based on Li⁺-doped SnO₂ one-dimensional porous nanofibers
Author(s) Yin, Min
Yang, Fang
Wang, Zhaojie
Zhu, Miao
Liu, Ming
Xu, Xiuru
Li, Zhenyu
Journal name Materials
Volume number 10
Issue number 5
Article ID 535
Start page 1
End page 9
Total pages 9
Publisher MDPI
Place of publication Basel, Switzerland
Publication date 2017
ISSN 1996-1944
Keyword(s) electrospun porous nanofibers
humidity sensor
lithium doping
response-recovery behavior
Science & Technology
Materials Science, Multidisciplinary
Materials Science
Summary One-dimensional SnO₂- and Li⁺-doped SnO₂ porous nanofibers were easily fabricated via electrospinning and a subsequent calcination procedure for ultrafast humidity sensing. Different Li dopant concentrations were introduced to investigate the dopant's role in sensing performance. The response properties were studied under different relative humidity levels by both statistic and dynamic tests. The best response was obtained with respect to the optimal doping of Li⁺ into SnO₂ porous nanofibers with a maximum 15 times higher response than that of pristine SnO₂ porous nanofibers, at a relative humidity level of 85%. Most importantly, the ultrafast response and recovery time within 1 s was also obtained with the 1.0 wt % doping of Li⁺ into SnO₂ porous nanofibers at 5 V and at room temperature, benefiting from the co-contributions of Li-doping and the one-dimensional porous structure. This work provides an effective method of developing ultrafast sensors for practical applications-especially fast breathing sensors.
Language eng
DOI 10.3390/ma10050535
Field of Research 099999 Engineering not elsewhere classified
03 Chemical Sciences
09 Engineering
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C1 Refereed article in a scholarly journal
Grant ID National Natural Science Foundation of China (No. 51003036) and the Shenzhen Science and Technology Research Grant (No. JCYJ20150629144328079)
Copyright notice ©2017, The authors
Persistent URL http://hdl.handle.net/10536/DRO/DU:30103144

Document type: Journal Article
Collections: Institute for Frontier Materials
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