Response to vapors of volatile organic compounds of SnO2 thin film

Fatih Dumludag*, Ozge Hacioglu, Ahmet Altindal

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This work presents effect of the vapors of Volatile Organic Compounds (VOCs) on sol-gel derived undoped SnO2 thin film. SnCl 4.5H2O was dissolved in ethanol. After the solution is stirred for two hours 3 ml glacial acetic acid were added into the solution. After the clear solution is obtained thin film of SnO2 was deposited by dipping method on glass substrate patterned with Interdigital Transducer (IDT). Final curing temperature was 573 K. Crystal structure of the film was investigated using X-ray diffraction. Gas sensing properties of the film were determined by means of change in conductivity as a function of temperature and gas concentration. The film was tested for the vapors of ammonia, toluene, ethanol and water. The film was also tested for the CO. Gas concentrations were controlled by MKS mass flow controller. The film was tested between the gas concentrations of 0.25% and 18%. All measurements were performed between the temperatures of 293 K - 573 K. The film showed good sensitivity to VOCs vapors even at room temperature. The results showed that response parameters such as response time, recovery time depends on temperature and gas concentration.

Original languageEnglish
Title of host publication7th International Conference of the Balkan Physical Union - Organized by the Hellenic Physical Society with Cooperation of the Physics Departments of Universities in Greece
Pages537-541
Number of pages5
DOIs
Publication statusPublished - 2010
Externally publishedYes
Event7th International Conference of the Balkan Physical Union - Alexandroupolis, Greece
Duration: 9 Sept 200913 Sept 2009

Publication series

NameAIP Conference Proceedings
Volume1203
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference7th International Conference of the Balkan Physical Union
Country/TerritoryGreece
CityAlexandroupolis
Period9/09/0913/09/09

Keywords

  • Sensor
  • Sol-gel
  • Thin film
  • Tin dioxide
  • VOC

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