Structural, optical, morphological and organic vapours sensing properties of SnO2 nanostructures

Abstract

MEMS & Sensors Division, School of Electronics Engineering, VIT University, Vellore-632 014, Tamilnadu, India E-mail : [email protected] Materials Physics Division, School of Advanced Sciences, VIT University, Vellore-632 014, Tamilnadu, India Organic Chemistry Division, School of Advanced Sciences, VIT University, Vellore-632 014, Tamilnadu, India Tin oxide is a wide band gap n-type semiconductor and has the capability to detect various reducing gases and organic vapours. The sensitivity towards different gases and organic vapours in high temperature environment is already reported. The present work is focused on the development of soft chemical route derived SnO₂ nanostructures to detect organic vapours. The ethanol sensing properties of the derived nanostructures of SnO₂ was analyzed. X-Ray diffraction, UV-Vis spectroscopy, scanning electron microscope and energy dispersive spectroscope characterizations have been performed to confirm the SnO₂ nanostructure formation. The optimum temperature for sensor operation towards 50 ppm of ethanol has also been found.