Structural and optical investigations of TiO2 films deposited on transparent substrates by sol-gel technique

Sharma, Sudhir Kumar and Vishwas, M and Narasimha Rao, K and Mohan, S and Reddy, D Sreekantha and Gowda, KVA (2009) Structural and optical investigations of TiO2 films deposited on transparent substrates by sol-gel technique. In: Journal of Alloys and Compounds, 471 (1-2). pp. 244-247.

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Abstract

An inexpensive and effective simple method for the preparation of nano-crystalline titanium oxide (anatase) thin films at room temperature on different transparent substrates is presented. This method is based on the use of peroxo-titanium complex, i.e. titanium isopropoxide as a single initiating organic precursor. Post-annealing treatment is necessary to convert the deposited amorphous film into titanium oxide (TiO2) crystalline (anatase) phase. These films have been characterized for X-ray diffraction (XRD) studies, atomic force microscopic (AFM) studies and optical measurements. The optical constants such as refractive index and extinction coefficient have been estimated by using envelope technique. Also, the energy gap values have been estimated using Tauc's formula for on glass and quartz substrates are found to be 3.35 eV and 3.39 eV, respectively.

Item Type:	Journal Article
Publication:	Journal of Alloys and Compounds
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	Nano-crystalline TiO2 films;Sol–gel technique;Structure; AFM; Optical properties.
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	06 Nov 2009 05:01
Last Modified:	19 Sep 2010 05:29
URI:	http://eprints.iisc.ac.in/id/eprint/19661

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