| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 751266 | Sensors and Actuators B: Chemical | 2010 | 7 Pages |
Abstract
The p-polyaniline/n-ZnO thin film heterojunction sensor for room temperature LPG detection was fabricated by electrodepositing polyaniline on chemical bath deposited ZnO film. The heterojunction showed rectifying behavior indicating the formation of a diode with ideality factor 1.10. The formation of diffusion free interface of heterojunction was confirmed from cross-sectional FESEM. The heterojunction sensor has quick and high response towards LPG as compared to N2 and CO2 and exhibited maximum response of 81% upon exposure of 1040 ppm of LPG. The LPG sensing mechanism for heterojunction is modeled through change in height of barrier potential.
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Authors
D.S. Dhawale, D.P. Dubal, A.M. More, T.P. Gujar, C.D. Lokhande,