EFFECT OF ANNEALING TEMPERATURE ON OPTICAL PROPERTIES OF TITANIUM DIOXIDE THIN FILMS PREPARED BY SOL-GEL METHOD

被引：2

作者：

Sarode, M. T. ^{[1
]}

Shelke, P. N. ^{[1
]}

Khollam, Y. B. ^{[1
]}

Jadkar, S. R. ^{[1
]}

Kale, B. B. ^{[1
]}

Mohite, K. C. ^{[1
]}

Koinkar, Pankaj ^{[2
]}

机构：

[1] Univ Pune, Sch Energy Studies, Pune 411007, Maharashtra, India

[2] Univ Tokushima, Ctr Int Cooperat Engn Educ, Tokushima 7708506, Japan

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2011年 / 25卷 / 31期

关键词：

TiO2; film; sol-gel; anatase; nanocrystalline;

D O I：

10.1142/S0217979211066490

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

TiO2 sol-gel thin films were deposited on glass substrates by dip coating method. Nanocrystalline TiO2 thin films were prepared at 300 degrees C. The effect of annealing temperature on optical properties of nanocrystalline TiO2 thin films was studied. The films were characterized by different techniques: XRD, UV-visible spectroscopy, FTIR spectroscopy and FESEM. The characterization studies revealed that the films are crystallized as anatase phase and are nano-structured. The optical measurements were showed the indirect band gap between 3.31 and 3.35 eV with corresponding crystallite sizes between 8.9 and 3.7 nm at the temperatures 300, 400 and 500 degrees C. The FESEM images of film were showed spherical nanocrystalline structure of TiO2 particles with the crystallite sizes between 30 and 100 nm. It is also observed that refractive index of the film increases with increasing the annealing temperature. The smaller crystallite size gives larger band gap due to quantum size effects.

引用

页码：4163 / 4166

页数：4

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