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

fYear

1999

fDate

1999

Firstpage

541

Lastpage

543

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1999. ISE 10. Proceedings. 10th International Symposium on

Conference_Location

Athens

Print_ISBN

0-7803-5025-1

Type

conf

DOI

10.1109/ISE.1999.832104

Filename

832104