P2.8.12 Annealing Effects on the Gas Sensing Properties of Spin Coated Unsubstituted Copper Phthalocyanine Films

Event

14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany

Chapter

P2.8 Sensors Based on New Materials

Author(s)

A. Datir - Agasti Arts, Commerce and Dadasaheb Rupwate Science College (India), V. Ghole - Department of Environmental Sciences, University of Pune (India), S. Chakane - Arts, Science and Commerce College, Indapur (India)

Pages

1688 - 1691

DOI

10.5162/IMCS2012/P2.8.12

ISBN

978-3-9813484-2-2

Price

free

Abstract

Unsubstituted copper phthalocyanine (CuPc) thin films were prepared using spin coating technique. The effects of post-deposition annealing of CuPc films on the NO2 gas sensing properties were studied. The results showed that the films annealed at 150 °C have highest sensitivity, highest response rate and lower response time. Sensitivity and response rate was decreased and response time was increased after the higher temperature (200 °C and above) annealing. The duration over which the films were annealed changes the gas sensing properties. Highest sensitivity, highest response rate, lower response time and highest recovery rate were observed for 2 hour (150 °C) annealed films. Longer annealing time causes the decrease of sensitivity, response rate and recovery rate and increase of response time however improves recovery ratio.