ABSTRACT
Optical properties such as absorption coefficients, refractive indices, and extinction coefficients
of pure polyvinyl-chloride (PVC) and DCM laser dye doped with PVC thin films where prepared
using casting method have been determined in the range between 190-1100nm. Measurement have
been performed in pure and doped (PVC). The direct electronic transition and indirect energy gaps
were calculated using the behaver of absorption coefficient with wavelength. The direct energy gap
was 3.9e.V for pure PVC and 2e.V for doped PVC, but indirect energy gap was 2.4e.V for pure PVC
and 1.1e.V for doped. The phonon energy was 1.05e.V for pure PVC and was 0.55e.V for DCM doped
with PVC thin film.
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