Temperature dependence of gas sensing behaviour of TiO2 doped PANI composite thin films

Subodh Srivastava, S. S. Sharma, Preetam Sharma, Vinay Sharma, Rajveer Singh Rajura, M. Singh, Y. K. Vijay

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In the present work we have reported the effect of temperature on the gas sensing properties of TiO2 doped PANI composite thin film based chemiresistor type gas sensors for hydrogen gas sensing application. PANI and TiO2 doped PANI composite were synthesized by in situ chemical oxidative polymerization of aniline at low temperature. The electrical properties of these composite thin films were characterized by I-V measurements as function of temperature. The I-V measurement revealed that conductivity of composite thin films increased as the temperature increased. The changes in resistance of the composite thin film sensor were utilized for detection of hydrogen gas. It was observed that at room temperature TiO2 doped PANI composite sensor shows higher response value and showed unstable behavior as the temperature increased. The surface morphology of these composite thin films has also been characterized by scanning electron microscopy (SEM) measurement.

Original languageEnglish
Title of host publicationSolid State Physics - Proceedings of the 58th DAE Solid State Physics Symposium 2013
PublisherAmerican Institute of Physics Inc.
Pages693-695
Number of pages3
Volume1591
ISBN (Print)9780735412255
DOIs
Publication statusPublished - 1 Jan 2014
Event58th DAE Solid State Physics Symposium 2013 - Patiala, Punjab, India
Duration: 17 Dec 201321 Dec 2013

Conference

Conference58th DAE Solid State Physics Symposium 2013
CountryIndia
CityPatiala, Punjab
Period17/12/1321/12/13

Keywords

  • Chemiresistor sensor
  • Scanning electron microscopy (SEM)

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    Srivastava, S., Sharma, S. S., Sharma, P., Sharma, V., Rajura, R. S., Singh, M., & Vijay, Y. K. (2014). Temperature dependence of gas sensing behaviour of TiO2 doped PANI composite thin films. In Solid State Physics - Proceedings of the 58th DAE Solid State Physics Symposium 2013 (Vol. 1591, pp. 693-695). American Institute of Physics Inc.. https://doi.org/10.1063/1.4872722