Graphene oxide thin film coated quartz crystal microbalance for humidity detection

被引：219

作者：

Yao, Yao ^{[1
]}

Chen, Xiangdong ^{[1
]}

Guo, Huihui ^{[1
]}

Wu, Zuquan ^{[1
]}

机构：

[1] SW Jiaotong Univ, Sch Informat Sci & Technol, Chengdu 610031, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2011年 / 257卷 / 17期

关键词：

Graphene oxide; Quartz crystal microbalance; Humidity sensor; Swelling effect; SENSING PROPERTIES; SENSOR; LAYERS;

D O I：

10.1016/j.apsusc.2011.04.028

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper, we demonstrated that chemically derived graphene oxide (GO) thin film as a humidity sensitive coating deposited on quartz crystal microbalances (QCMs) for humidity detection. By exposing GO thin film coated QCMs to various relative humidity (RH) environments at room temperature, the humidity sensing characteristics of the QCMs such as sensitivity and linearity, response and recovery, humidity hysteresis were investigated. The experiment results show that GO thin film coated QCMs exhibit an excellent humidity sensing performance. Moreover, the possible humidity sensing mechanism of GO thin film coated QCMs was also investigated by monitoring the crystal's motional resistance change. It is suggested that the frequency response of the QCMs is dependent on water molecules adsorbed/desorbed masses on GO thin film in the low RH range, and on both water molecules adsorbed/desorbed masses on GO thin film and variations in interlayer expansion stress of GO thin film derived from swelling effect in the high RH range. (C) 2011 Elsevier B. V. All rights reserved.

引用

页码：7778 / 7782

页数：5

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