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Electrochemical, Structural, and opticalproperties of Tin oxide thin films

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Academic year: 2021

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5 ème conférence internationale des énergies renouvelables 2017

Electrochemical, Structural, and optical properties of Tin oxide thin films

D. Lakhdari, D.Belfenqche, M.C.Benachour, H.DEHDOUH

Abstract : ABSTRACT SnO2 thin films were electrodeposited on fluorine tin oxide substrate in nitric acid solution. The potential was swept from -0.4 to -1.6V with a rate of 50 mV/s. The films were found uniform, adherent to the substrate and amorphous. The XRD patterns reveal that after heat treatment at 500 °C for 1h, the films turn out to be crystalline in nature. Indeed, the film becomes composed of SnO2 nanocrystallite with a casseterite tetragonal structure. The nanocrystallite size is about 50 nm. The films thickness was found to be approximately 592nm and 563 nm for asdeposited and heat-treated SnO2 thin films, respectively.

Some optical parameters of these films such as refractive index (n), extinction coefficient (k), absorption coefficient (?) and band gap were studied.

Keywords : Thin films, SnO2, XRD

Centre de Recherche en Technologies Industrielles - CRTI - www.crti.dz

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