Title :
Preparation and properties of CuPc/ZnO hybrid composite films
Author :
Jiang, Y.D. ; Wang, T. ; Xie, D. ; Wu, Z.M. ; Cheng, X.D.
Author_Institution :
Dept. of Mater. Sci. & Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
Nitric dioxide (NO2) is one kind of toxic gas in the atmosphere which does great harm to the environment and the health of humans. So, it is very important to obtain the concentration of NO2 in the environment timely and accurately, so as to monitor and protect the environment. Because of the high sensitivity and high selectivity of phthalocyanine (Pc), it has been widely studied. Here, a novel kind of CuPc/ZnO hybrid composite gas-sensitive film prepared by vacuum evaporation is studied. The results show that CuPc/ZnO hybrid composite films have good gas-sensitivity to NO2, good selectivity and short response time. The resistivity decreases 3-4 order of magnitude compared with pure CuPc film. At the same time, the sensitivity mechanism of CuPc/ZnO hybrid composite films and the influential factors are primarily studied
Keywords :
II-VI semiconductors; composite materials; copper compounds; electric sensing devices; electrical resistivity; gas sensors; organic compounds; organic semiconductors; semiconductor thin films; vacuum deposited coatings; vacuum deposition; zinc compounds; CuPc/ZnO hybrid composite films; NO2 concentration; ZnO; gas-sensitive film; phthalocyanine; preparation; properties; resistivity; sensitivity mechanism; short response time; toxic gas; vacuum evaporation; Atmosphere; Delay; Electrodes; Humans; Materials science and technology; Monitoring; Resistors; Temperature sensors; Voltage; Zinc oxide;
Conference_Titel :
Electrets, 1999. ISE 10. Proceedings. 10th International Symposium on
Conference_Location :
Athens
Print_ISBN :
0-7803-5025-1
DOI :
10.1109/ISE.1999.832104
