Choice of Material for Sensor: Nanostructured Zinc Oxide

Authors: Anil RB*

DOI: 10.23880/nnoa-16000177

Volume 5, Issue 1

Abstract

To study and develop the fundamentals of the gas sensing mechanism, the semiconducting sensors are modified by simple addition of metals (Al, In, Cu, Sn, Fe, Ru, Pt, Pd, etc.), in the base materials, which is referred as doping. Metal oxides such as ZnO, SnO₂ , Fe₂O₃ , TiO₂ , WO₃ etc. have also been used as gas sensors. Despite these broad studies in the semiconductor sensor area, problems such as poor gas selectivity, inability to detect the trace amount of gas (ppm/ ppb), and degradation of the sensor performance by surface contamination still persist. Thus, there is growing need for nanocrystalline gas sensors with novel properties.

Keywords: Nanostructured Zinc Oxide; Semiconductor; Nanorods

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