SKM 2021 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 19: Poster Session IV

HL 19.7: Poster

Thursday, September 30, 2021, 13:30–16:30, P

Ammonia and Acetone Gas Sensor Based on Nanocomposites of Indium Oxide and Multiwalled Carbon Nanotubes — •Nipin Kohli — Technical University Berlin

This work reports the effect of introducing carbon nanotubes in indium oxide on structural, morphological, optical and ammonia sensing properties. Various characterization techniques such as X-ray diffraction, transmission electron microscopy, BET, Fourier transform infra-red, UV-visible and Raman spectroscopy were employed to understand the structural, morphological and optical properties of the synthesized samples. The gas sensors were fabricated out of the synthesized samples to test their response towards ammonia and acetone at different operating temperatures and at different concentrations. The nanocomposite exhibits enhanced sensing performance and is capable of detecting concentration of acetone and ammonia as low as 10 ppm at optimum operable temperature of 300°C and 200°C, respectively.