Highly sensitive humidity sensing properties of carbon quantum dots films

被引：69

作者：

Zhang, Xing ^{[1
,2
]}

Ming, Hai ^{[1
,2
]}

Liu, Ruihua ^{[1
,2
]}

Han, Xiao ^{[1
,2
]}

Kang, Zhenhui ^{[1
,2
]}

Liu, Yang ^{[1
,2
]}

Zhang, Yonglai ^{[3
,4
]}

机构：

[1] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Suzhou, Peoples R China

[2] Soochow Univ, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou, Peoples R China

[3] City Univ Hong Kong, Dept Phys & Mat Sci, Ctr Super Diamond & Adv Films COSDAF, Hong Kong, Hong Kong, Peoples R China

[4] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2013年 / 48卷 / 02期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Thin films; Electrical properties; NANOTUBES;

D O I：

10.1016/j.materresbull.2012.11.056

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We reported the fabrication of a humidity sensing device based on carbon quantum dots (CQDs) film. The conductivity of the CQDs film has a linear and rapid response to relative humidity, providing the opportunity for the fabrication of humidity sensing devices. The mechanism of our humidity sensor was proposed to be the formation of hydrogen bonds between carbon quantum dots and water molecules in the humidity environment, which significantly promote the electrons migration. In a control experiment, this hypothesis was confirmed by comparing the humidity sensitivity of candle soot (i.e. carbon nanoparticles) with and without oxygen containing groups on the surfaces. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：790 / 794

页数：5

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