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Humidity Sensing Properties of Flower-Like VO2(B) and VO2(M) Nanostructures

✍ Scribed by Haihong Yin ; Ke Yu; Zhengli Zhang; Min Zeng; Lei Lou; Ziqiang Zhu

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
781 KB
Volume
23
Category
Article
ISSN
1040-0397

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✦ Synopsis

Abstract

VO~2~(B) nanoflowers were synthesized via hydrothermal method, and VO~2~(M) nanoflowers were obtained through heat‐transformation. Two sensors based on VO~2~(B) and VO~2~(M) nanoflowers were fabricated and their humidity characteristics were studied. It was found that these sensors exhibited fast response and recovery, perfect reproducibility and good stability. The VO~2~(M) type sensor is more sensitive at high RH and can be used for high humidity detection. On the contrary, the VO~2~(B) type sensor has a higher sensitivity at low RH, and can be used for low humidity detection, which is difficult for humidity sensors based on many other semiconductor oxides.

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