CO-sensor for domestic use based on high temperature stable Ga2O3 thin films

T. Schwebel, M. Fleischer, H. Meixner, C. D. Kohl

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

Gas sensors based on high temperature operated metal oxides, like Ga2O3 thin films show promising properties in terms of reproducibility, long-term stability against interfering gases and low cross sensitivity to humidity. In this paper a surface modification of Ga2O3 is presented which allows the set up of a sensor suitable for indoor CO monitoring. The modification based on Au-clusters on the Ga2O3 surface yields high sensitivity to CO and a distinct reduction of the cross sensitivity towards organic solvents. With the specimens, a resistance change of approx. factor 4 to 100 ppm CO in wet air is attained. By employing catalytic filters of ceramic material, cross sensitivities to organic solvents are virtually completely eliminated.

Original languageEnglish
Pages (from-to)46-51
Number of pages6
JournalSensors and Actuators, B: Chemical
VolumeB49
Issue number1-2
Publication statusPublished - Jan 1 1998

Fingerprint

Carbon Monoxide
Organic solvents
Thin films
sensitivity
sensors
Sensors
Ceramic materials
thin films
Chemical sensors
Surface treatment
Atmospheric humidity
Temperature
Oxides
Monitoring
Air
Gases
Metals
gases
metal oxides
humidity

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

Cite this

CO-sensor for domestic use based on high temperature stable Ga2O3 thin films. / Schwebel, T.; Fleischer, M.; Meixner, H.; Kohl, C. D.

In: Sensors and Actuators, B: Chemical, Vol. B49, No. 1-2, 01.01.1998, p. 46-51.

Research output: Contribution to journalArticle

Schwebel, T. ; Fleischer, M. ; Meixner, H. ; Kohl, C. D. / CO-sensor for domestic use based on high temperature stable Ga2O3 thin films. In: Sensors and Actuators, B: Chemical. 1998 ; Vol. B49, No. 1-2. pp. 46-51.
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