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Vol. 111, Issue 12, December 2009, pp. 155-164




Effect of Firing Temperature on Humidity Sensing Properties of SnO2 Thick Film Resistor


R. Y. Borse and A. S. Garde

Thin and Thick film laboratory, Department of Electronic Science and Department of Physics,

M S G College, Malegaon Camp, Malegaon, Dist- Nasik-423 105, (MS), India

Tel: +91-(02554) 252077, +91-9423287992, fax-+91-(02554) 251705

E-mail: ratanborse@yahoo.co.in, arungarde@yahoo.co.in



Received: 17 September 2009   /Accepted: 22 December 2009   /Published: 30 December 2009


Abstract: Thick films of SnO2 were prepared using standard screen printing technique. The films were dried and fired at different temperatures. Tin-oxide is an n-type wide band gap semiconductor, whose resistance is described as a function of relative humidity. An increasing firing temperature on SnO2 film increases the sensitivity to humidity. The parameters such as sensitivity, response times and hysteresis of the SnO2 film sensors have been evaluated. The thick films were characterized by XRD, SEM and EDAX and grain size, composition of elements, relative phases are obtained.


Keywords: Thick film resistors, Tin oxide, Humidity, Sensitivity, XRD


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