English, Article edition: EFFECT OF ANNEALING TEMPERATURE ON THE OPTICAL AND STRUCTURAL PROPERTIES OF DIP-COATED Al2O3 THIN FILMS PREPARED BY SOLâGEL ROUTE F. E. GHODSI; M. MAFAKHERI; A. NOVINROOZ

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Physical Description
  • article
Language
  • English

Edition details

Title
  • EFFECT OF ANNEALING TEMPERATURE ON THE OPTICAL AND STRUCTURAL PROPERTIES OF DIP-COATED Al2O3 THIN FILMS PREPARED BY SOLâGEL ROUTE
Author
  • F. E. GHODSI
  • M. MAFAKHERI
  • A. NOVINROOZ
Physical Description
  • article
Notes
  • Thin films of Al2O3 were prepared by the solâgel process. Dip-coating technique was used for deposition of the Al2O3 thin films onto glass substrates. Optical and structural properties of the films were investigated with respect to the annealing temperature (100â500°C). The structure of these films was determined by X-ray diffraction (XRD). Scanning electron microscopy (SEM) was performed for the analysis of surface morphology. For determination of the optical constants of Al2O3 thin films, UV-Visible spectrophotometry measurements were carried out. Annealing temperature affects the structural and optical properties of the Al2O3 thin films. The refractive index and extinction coefficient of the films at 550 nm wavelength increase from 1.56 to 1.66, and from 3.41 à 10-5 to 5.54 à 10-5, respectively while optical band gap and thickness of the films decrease from 4.15 eV to 4.11 eV, and 360 nm to 260 nm, respectively, by increasing annealing temperature from 100°C to 500°C.
  • Aluminum oxide, solâgel, thin films, optical constants
  • RePEc:wsi:srlxxx:v:12:y:2005:i:05:p:793-797
Language
  • English
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