کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1814891 | 1025657 | 2007 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of annealing on structural and optical properties of WO3 thin films prepared by electron-beam coating
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Thin films of WO3 were deposited on glass substrates by the electron-beam evaporation technique. Three annealing temperatures, of 673, 723 and 773Â K, were used for different films. Two kinds of annealing were used: in air and under vacuum. The influence of the annealing temperature on the structure and optical properties of the WO3 was studied. The surface morphology of the thin films was investigated by atomic force microscopy, which showed that molecule size depends on the air pressure and the annealing temperature. Spectrophotometric measurements of transmittance and reflectance were carried out in the wavelength range 190-2500Â nm. The refractive index, n, and the change in optical density, ÎOD, were found to be dependent on annealing temperature. The energy gap Eg decreased with increasing annealing temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 391, Issue 2, 1 April 2007, Pages 199-205
Journal: Physica B: Condensed Matter - Volume 391, Issue 2, 1 April 2007, Pages 199-205
نویسندگان
A.A. Joraid, S.N. Alamri,