DEPOSITION AND CHARACTERIZATION OF ZnO THIN FILMSFOR CHEMIRESISTIVE

DEPOSITION AND CHARACTERIZATION OF ZnO THIN FILMSFOR CHEMIRESISTIVE

ZnO THIN FILMS FOR CHEMIRESISTIVE BASED VAPOUR DETECTION APPLICATION

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Metal oxide semiconductors (MOS) are well known as multi-function materials and gas sensing application employing MOS is one of the most studied areas. The sensing mechanism depends on the change of the resistance of the MOS in the presence of the gas under test, in which the gas adsorption led to a charge transfer between the chem isorption oxygen and the MOS surface.The oxygen molecules from the ambient atmosphere are initially adsorbed at the MOS surface follows by the extraction of electron from the conduction band of the MOS material. The oxygen molecule is then converted to a single or a...