Hashim, H., Abdallh, M., Yousif, E. (2012). Studying the Influence of Cobalt Chloride on the Optical Properties of Poly (vinyl alcohol) Films. , 15(1), 40-45.
Hassan Hashim; Mustafa Abdallh; Emad Yousif. "Studying the Influence of Cobalt Chloride on the Optical Properties of Poly (vinyl alcohol) Films". , 15, 1, 2012, 40-45.
Hashim, H., Abdallh, M., Yousif, E. (2012). 'Studying the Influence of Cobalt Chloride on the Optical Properties of Poly (vinyl alcohol) Films', , 15(1), pp. 40-45.
Hashim, H., Abdallh, M., Yousif, E. Studying the Influence of Cobalt Chloride on the Optical Properties of Poly (vinyl alcohol) Films. , 2012; 15(1): 40-45.

Studying the Influence of Cobalt Chloride on the Optical Properties of Poly (vinyl alcohol) Films

Journal of Al-Nahrain University - Science
Article 1, Volume 15, Issue 1, 2012, Pages 40-45
Authors
Hassan Hashim; Mustafa Abdallh; Emad Yousif
Abstract
The change in the optical band gap and optical activation energy have been investigated for pure and doped Poly (vinyl alcohol) with different cobalt chloride concentrations have been prepared to study their optical properties from the absorption spectra. The absorption spectra were measured in the wave range from (200-800) nm at room temperature. The optical band gap (Eg) for allowed direct transition decrease with increase the concentration of Cobalt Chloride. The optical activation energy for allowed direct transition band gap was evaluated using Urbach- edges method.
Keywords
poly; optical energy gap
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