The humidity sensitive behavior of poly(ethyleneimine)/multiwall carbon nanotube composite films
(0) In this paper,a novel humidity sensor based on polymer-carbon nanotube composites was prepared and characterized.Two different methods were adopted to fabricate the humidity-sensing film for these sensors.The surface of the films was observed by a scanning electron microscope (SEM).The sensing material made up of poly(ethyleneimine) and multiwall carbon nanotube was sprayed on the interdigitated microelectrode pairs(IDTs).The resistance between the two electrodes was measured at different relative humidity levels at 19℃.The data shows that the resistance increases with the rise of the relative humidity over the range of 5-90% RH and that,the resistance increases almost linearly in the range of 5-71% RH.The response of the sensors to NO2 and NH3 were also examined,and the results reveal that the sensor is not sensitive to both of them.
Poly(ethyleneimine) Multiwall carbon nanotube Composite film Spray Humidity sensor
Tao Zhu Guangzhong Xie Yadong Jiang Jian Liao Huiling Tai
School of Optoelectronic Information, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China(UESTC), Chengdu 610054,China
国际会议
广州
英文
588-591
2012-11-16（万方平台首次上网日期，不代表论文的发表时间）