Room temperature liquefied petroleum gas (LPG) sensor

Dattatray Dhawale, D. P. Dubal, A. M. More, T. P. Gujar, C. D. Lokhande

Research output: Contribution to journalArticle

61 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)488-494
Number of pages7
JournalSensors and Actuators, B: Chemical
Volume147
Issue number2
DOIs
Publication statusPublished - 3 Jun 2010
Externally publishedYes

Fingerprint

Liquefied petroleum gas
Chemical sensors
crude oil
Heterojunctions
heterojunctions
sensors
room temperature
gases
Polyaniline
Temperature
Sensors
baths
Diodes
diodes
Thin films
thin films
polyaniline

Keywords

  • Heterojunction
  • LPG sensor
  • LPG sensor model
  • Selectivity
  • Stability
  • Thin films

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Instrumentation

Cite this

Room temperature liquefied petroleum gas (LPG) sensor. / Dhawale, Dattatray; Dubal, D. P.; More, A. M.; Gujar, T. P.; Lokhande, C. D.

In: Sensors and Actuators, B: Chemical, Vol. 147, No. 2, 03.06.2010, p. 488-494.

Research output: Contribution to journalArticle

Dhawale, Dattatray ; Dubal, D. P. ; More, A. M. ; Gujar, T. P. ; Lokhande, C. D. / Room temperature liquefied petroleum gas (LPG) sensor. In: Sensors and Actuators, B: Chemical. 2010 ; Vol. 147, No. 2. pp. 488-494.
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