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International Journal on Smart Sensing and Intelligent Systems

Professor Subhas Chandra Mukhopadhyay

Exeley Inc. (New York)

Subject: Computational Science & Engineering, Engineering, Electrical & Electronic


eISSN: 1178-5608



VOLUME 2 , ISSUE 3 (September 2009) > List of articles


Allal LARBI * / Bachir DJEDOU / Layachi BENNACER / Mounir BOUSBIA-SALAH

Keywords : Phthalocyanines, thin films, conductivity variations, gas concentration, doping, adsorption, diffusion, reversibility, charge transfer, gas sensor, air pollution.

Citation Information : International Journal on Smart Sensing and Intelligent Systems. Volume 2, Issue 3, Pages 448-462, DOI:

License : (CC BY-NC-ND 4.0)

Published Online: 03-November-2017



This paper describes the development of a new gas sensor device using some electroactive polymers in thin layers. The poly(fluoro-aluminium phthalocyanine) powder, (AlPcF)n, has been synthesized, then deposited by vacuum evaporation on alumina or silicon substrates in the form of thin films with control of the deposition rate. (AlPcF)n thin layers are doped by NO2 or O2 diluted at various concentrations in N2 and their conductivity variations are studied as a function of time, temperature and doping gas concentration. The doping process is reversible, and the experimental results are interpreted in terms of adsorption and diffusion of the gas in the polymer, charge transfer, and transport of the injected carriers in the polymer chain. These experimental results and previous studies on other polymers and oxidizing gases demonstrate the potentiality of such materials to be used as sensitive part of gas sensors.

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