Structural, optical and electrical properties of TiO2 thin films synthesized by sol–gel technique

Autor:	Adel Taabouche, Y. Bouachiba, Faouzi Hanini, M. Hemissi, Fouad Kermiche, Abderrahmane Bouabellou, and D. Lakhdari
Rok vydání:	2013
Předmět:	Anatase Materials science Annealing (metallurgy) Electrical resistivity and conductivity Band gap Analytical chemistry Direct and indirect band gaps Thin film Amorphous solid Sol-gel
Zdroj:	IOSR Journal of Engineering. 3:21-28
ISSN:	2250-3021 2278-8719
Popis:	The influence of annealing temperature on the structure, optical and electrical property of TiO thinfilms with (101) preferential orientation were deposited on glass substrates by sol–gel technique has beenstudied. As-deposited films were amorphous, and the XRD studies showed that the formation of anatase phasewas initiated at annealing temperature close to 400 °C. The grain size of the film annealed at 550 °C was about22 nm. The transmission spectra, recorded in the UV visible range reveal a relatively high transmissioncoefficient (~70%) in the obtained films. The transmittance data analysis indicates that the optical band gap (E)is closely related to the annealing temperature, an indirect band gap ranging from 3.43 eV to 3.04 eV wasdeduced. The electrical resistivity measurement that were carried out in function of the annealing temperature showed a sharp decrease in resistivity was found to be 0.0802 .cm.2g
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::168f0d37cc89c8635278615abb6efbd7 https://doi.org/10.9790/3021-031112128 Zobrazit plný text záznamu