Compositional analysis and optical properties of Co doped TiO2 thin films fabricated by spray pyrolysis method for dielectric and p hotocatalytic applications

Journal article

Authors / Editors

Juma, Albert

Research Areas

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Publication Details

Author list: Wafula HB, Musembi RJ, Juma AO, Tonui P, Simiyu J, Sakwa T, Prakash D, Verma KD

Publisher: Elsevier

Place: MUNICH

Publication year: 2017

Journal: Optics: International Journal for Light and Electron Optics (0030-4026)

Journal acronym: OPTIK

Volume number: 128

Start page: 212

End page: 217

Number of pages: 6

ISSN: 0030-4026

Languages: English-Great Britain (EN-GB)

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Abstract

Cobalt doped TiO2 thin films (CTF) deposited by spray pyrolysis has been studied. The compositional analysis has been done using RBS method, while optical spectroscopy has been done by measuring the transmittance and reflectance of the films. The CTF thin films were prepared by doping TiO2 at different concentration levels of Co which was varied between 0 and 4.51 at.%. The optical transmittance of the thin film has been found to be about 80% in the visible and near infra red regions. The calculated optical band gap has been observed to shift by about 0.22 eV, this shows a high potential for application as a dielectric and a Photocatalyst material. (C) 2016 Elsevier GmbH. All rights reserved.

Keywords

Cobalt oxide, Dielectric, Optical properties, Photocatalytic applications, spray pyrolysis, Thin film, Titanium dioxide

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