Humidity Sensor Based on Multi-Walled Carbon Nanotube Thin Films

被引：103

作者：

Cao, C. L. ^{[1
,2
]}

Hu, C. G. ^{[1
]}

Fang, L. ^{[1
]}

Wang, S. X. ^{[1
]}

Tian, Y. S. ^{[2
]}

Pan, C. Y. ^{[2
]}

机构：

[1] Chongqing Univ, Dept Appl Phys, Chongqing 400044, Peoples R China

[2] Chongqing Commun Coll, Dept Phys, Chongqing 400035, Peoples R China

来源：

JOURNAL OF NANOMATERIALS | 2011年 / 2011卷

关键词：

NO2;

D O I：

10.1155/2011/707303

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The properties of the humidity sensors made of chemically treated and untreated multi-walled carbon nanotube (MWCNT) thin films are investigated systematically. It shows that both the chemically treated and untreated MWCNT thin films demonstrate humidity sensitive properties, but the former have stronger sensitivity than the latter. In the range of 11%-98% relative humidity (RH), the resistances of the chemically treated and untreated MWCNT humidity sensors increase 120% and 28%, respectively. Moreover, the treated humidity sensors showed higher sensitivity and better stability. In addition, the response and recover properties, and stabilization of the humidity sensors are measured, and the humidity sensitive mechanisms of the sensors are analyzed. The humidity sensitivity of carbon nanotube thin films indicates it promise as a kind of humidity sensitive material.

引用

页数：5

共 17 条

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