American Journal of Applied Sciences

Mathematical Modeling and Interpretation of PbPc Gas Sensor Array

Nidal F. Shilbayeh and Mahmoud Z. Iskandarani

DOI : 10.3844/ajassp.2006.1879.1884

American Journal of Applied Sciences

Volume 3, Issue 6

Pages 1879-1884

Abstract

The voltage/current characteristics and the effect of NO2 gas on the electrical conductivity of a PbPc gas sensor array is investigated. The gas sensor is manufactured using vacuum deposition of gold electrodes on sapphire substrate with the lead-phathalocyanine vacuum sublimed on the top of the gold electrodes. Two versions of the PbPc gas sensor array are investigated. The tested types differ in the gap sizes between the deposited gold electrodes. The sensors are tested at different temperatures to account for conductivity changes as the molecular adsorption/desorption rate is affected by heat. The obtained results found to be encouraging as the sensors showed stability and sensitivity towards low concentration of applied NO2 gas.

Copyright

© 2006 Nidal F. Shilbayeh and Mahmoud Z. Iskandarani. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.