期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 471, 期 1-2, 页码 244-247出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2008.03.058
关键词
Nano-crystalline TiO2 films; Sol-gel technique; Structure; AFM; Optical properties
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. (C) 2008 Elsevier B.V. All rights reserved.
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