P2.8.13 Nitrogen Dioxide Sensing Characteristics of Spin Coated Unsubstituted Copper Phthalocyanine Films
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
- P2.8 Sensors Based on New Materials
- S. Chakane - Arts, Science and Commerce College (India), A. Datir - Agasti Arts, Commerce and Dadasaheb Rupwate Science College (India), V. Ghole - Department of Environmental Sciences, University of Pune (India)
- 1692 - 1695
Copper phthalocyanine (CuPc) synthesized chemically was used for making CuPc thin films using spin coating technique. Spin coated films of unsubstituted CuPc films annealed at 150°C for 2 hrs were used to study NO2 gas sensing characteristics. a- phase of CuPc is noticed by X-ray diffraction and UV-Visible absorption spectra. IR spectra of undoped CuPc films and doped CuPc films with NO2 revealed that, doping of nitrogen dioxide modifies and deletes some of the bands. The effect of NO2 at various concentrations in atmospheric air at room temperature on the electrical conductivity of CuPc films was studied. Sensitivity, response time and repeatability of the CuPc sensor were discussed in this paper.