Room temperature LPG sensor based on n-CdS/p-polyaniline heterojunction

Dattatray Dhawale, D. P. Dubal, V. S. Jamadade, R. R. Salunkhe, S. S. Joshi, C. D. Lokhande

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

In the present work, room temperature (300 K) liquefied petroleum gas (LPG) sensor based on n-CdS/p-polyaniline thin film heterojunction has been fabricated using simple inexpensive electrodeposition technique. The CdS and polyaniline films were characterized for their structural and surface morphological properties and LPG sensing performance of n-CdS/p-polyaniline heterojunction was studied. The X-ray diffraction (XRD) study revealed polycrystalline cubic phase for CdS films whereas the polyaniline films exhibited amorphous structure. Morphological analysis using field-emission scanning electron microscopy (FESEM) of the junction cross-section revealed the formation of a diffusion-free interface. The room temperature gas response towards N 2, CO 2 and LPG was investigated and found to exhibit high response towards LPG as compared to N 2 and CO 2. The maximum gas response of 80% was achieved with 95% stability for n-CdS/p-polyaniline heterojunction upon exposure of 1040 ppm LPG at room temperature.

Original languageEnglish
Pages (from-to)205-210
Number of pages6
JournalSensors and Actuators, B: Chemical
Volume145
Issue number1
DOIs
Publication statusPublished - 4 Mar 2010
Externally publishedYes

Fingerprint

Liquefied petroleum gas
Polyaniline
Chemical sensors
crude oil
Heterojunctions
heterojunctions
sensors
room temperature
gases
Carbon Monoxide
Temperature
Gases
Amorphous films
Electrodeposition
Field emission
Surface properties
polyaniline
electrodeposition
X ray diffraction
Thin films

Keywords

  • Heterojunction
  • LPG
  • Selectivity
  • Sensor
  • Stability
  • Thin film

ASJC Scopus subject areas

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

Cite this

Dhawale, D., Dubal, D. P., Jamadade, V. S., Salunkhe, R. R., Joshi, S. S., & Lokhande, C. D. (2010). Room temperature LPG sensor based on n-CdS/p-polyaniline heterojunction. Sensors and Actuators, B: Chemical, 145(1), 205-210. https://doi.org/10.1016/j.snb.2009.11.063

Room temperature LPG sensor based on n-CdS/p-polyaniline heterojunction. / Dhawale, Dattatray; Dubal, D. P.; Jamadade, V. S.; Salunkhe, R. R.; Joshi, S. S.; Lokhande, C. D.

In: Sensors and Actuators, B: Chemical, Vol. 145, No. 1, 04.03.2010, p. 205-210.

Research output: Contribution to journalArticle

Dhawale, D, Dubal, DP, Jamadade, VS, Salunkhe, RR, Joshi, SS & Lokhande, CD 2010, 'Room temperature LPG sensor based on n-CdS/p-polyaniline heterojunction', Sensors and Actuators, B: Chemical, vol. 145, no. 1, pp. 205-210. https://doi.org/10.1016/j.snb.2009.11.063
Dhawale, Dattatray ; Dubal, D. P. ; Jamadade, V. S. ; Salunkhe, R. R. ; Joshi, S. S. ; Lokhande, C. D. / Room temperature LPG sensor based on n-CdS/p-polyaniline heterojunction. In: Sensors and Actuators, B: Chemical. 2010 ; Vol. 145, No. 1. pp. 205-210.
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