Influence of annealing temperature on the properties of titanium oxide thin film

Ya Q. Hou, Da Ming Zhuang, Gong Zhang, Ming Zhao, Min Sheng Wu

Research output: Contribution to journalArticle

123 Citations (Scopus)

Abstract

The influence of annealing temperature on the micro-structure, surface morphology and optical property of TiO2 thin films prepared by mid-frequency ac magnetron sputtering technique has been studied. The micro-structure and surface morphology were examined by X-ray diffractometer (XRD) and atomic force microscopy (AFM). The transmittance and reflectance spectra of TiO2 thin films on fused silica substrate were measured by spectrophotometer. The reflective indices and extinction coefficients of TiO2 films were calculated by envelope method and experimental expression, respectively. The results show that the TiO2 thin film sputtered at room temperature is amorphous. After annealing under lower temperature (=700 °C), anatase phase appeared in TiO2 thin film. After annealing under higher temperature (=900 °C), the structure of TiO2 thin film changed into rutile completely; the TiO2 grains changed from column to nubbly. The refractive index of TiO2 thin film increases with annealing temperature and the extinction coefficient decreases a little during the lower temperature anneal. The TiO2 thin film annealed at 500 °C has the best optical property.

Original languageEnglish
Pages (from-to)97-105
Number of pages9
JournalApplied Surface Science
Volume218
Issue number1-4
DOIs
Publication statusPublished - 2003 Sep 30

Keywords

  • Anatase
  • Annealing
  • Mid-frequency ac magnetron sputtering
  • Optical property
  • Titanium oxide thin film

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Condensed Matter Physics

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