Bismuth molybdate thick films as ethanol sensor

Kiran Jain; Vipin Kumar; H. P. Gupta; A. C. Rastogi

doi:10.1117/12.514897

14 October 2003 Bismuth molybdate thick films as ethanol sensor

Kiran Jain, Vipin Kumar, H. P. Gupta, A. C. Rastogi

Proceedings Volume 5062, Smart Materials, Structures, and Systems; (2003) https://doi.org/10.1117/12.514897
Event: Smart Materials, Structures, and Systems, 2002, Bangalore, India

Abstract

Ethanol sensitivity of bismuth molybdate thick films and sintered pellets were investigated. Sintered pellets were prepared by traditional ceramic processing. Thick films were prepared by metallorganic decomposition process. Ethanol gas sensitivity was measured at various temperatures and concentrations. Thick films of alpha phase bismuth molybdate prepared by spray pyrolysis showed a very fast response to ethanol detection. The response time for the bulk samples is about 40 sec which decreased to about 6 sec for thick films at an operating temperature of 300°C. An extremely low level approximately 10 ppm detection and fast response makes this technique ideal for sensor element fabrication for detection and estimation of alcohol in breath-analyzer. Unlike SnO₂, the resistance of these sensors is not affected by humidity at the operating temperature.

Citation Download Citation

Kiran Jain, Vipin Kumar, H. P. Gupta, and A. C. Rastogi "Bismuth molybdate thick films as ethanol sensor", Proc. SPIE 5062, Smart Materials, Structures, and Systems, (14 October 2003); https://doi.org/10.1117/12.514897

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