Diyala Journal for Pure Science DJPS

P- ISSN:2222-8373, E-ISSN:2518-9255

Volume 13, Issue 1, Part 1 , January. 2017

Influence of Thickness Variation on Optical Properties of (Poly Vinyl Alcohol : violet Methyl) Composite

Yaqoob M. Jawad

Year: 2017, Volume: 13, Issue: 1, Part:1

Pages: 145-153, DOI: http://dx.doi.org/10.24237/djps.1301.138A

Language: English

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Abstract    

Poly(vinyl alcohol) doped  by (Violet methyl) films with different thicknesses were prepared by casting method . The effects of thicknesses on the optical Characterization of poly (vinyl alcohol) films have been studied.  The films show indirect allowed interband transitions that influenced by the thicknesses , the optical energy gap has been increased with increasing the thickness and the localized tail widths have been decreased with increasing the thickness.

Keywords: Poly(vinyl alcohol)  , Casting method , Optical Properties, Urbach Energy,  Influence of thickness variation