Nanostructured thin films of Ba doped In₂O₃ for selectively monitoring trace levels of NO_x
by Chander Shekhar, K.I. Gnanasekar, E. Prabhu, V. Jayaraman, T. Gnanasekaran
International Journal of Nanotechnology (IJNT), Vol. 7, No. 9/10/11/12, 2010

Abstract: Nanostructured thin films of Ba-doped indium oxide have been examined for monitoring ppm levels of NO_x in ambient air, and their response patterns have been recorded at different operating conditions. These films are found to be capable of sensing down to 0.5 ppm NO_x concentration in air. The optimum operating temperature for sensing is found to be 300°C. Response and retrace times are typically 60 s and 300 s respectively. They are highly selective to NO_x and do not show significant response to hydrogen and petroleum gas up to 5000 ppm.

Online publication date: Tue, 17-Aug-2010

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