Effect of annealing temperature on the optical properties of DCM-PVC doped with TiO2 nanoparticales thin films

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Muthanna Journal of Pure Sciences – MJPS

VOL.4 – NO. 1 / January 2017

Shymaa K. Hussian

Physics Department, Science College, Al-Muthanna University, Iraq,

Abstract

Poly (vinyl chloride) (PVC) blended with DCM laser dye co-doped with TiO2 nanoparticles thin films were prepared using cast method. The TiO2 nanoparticles was synthesized using sol-gel technique. It was observed from result that the allowed direct electronic transitions energy gap was decreased from 2.08 to 1.94 eV as the temperature increasing from 25-70◦C while the allowed indirect electronic transition energy gap increasing from 1.98 to 2.09 eV as the temperature increasing with the same range . The optical properties of final samples such as absorbance, absorption coefficient, refractive index and the optical conductivity of the prepared thin films were studied under the effect of annealing temperature changes.

 

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