Investigation of GI Effect on the Optical Properties of Bromocresol Green Dye Doped Poly Methyl Methacrylate Thin Films
Keywords:
Thin Films, Optical Properties, Gamma Ray.Abstract
In this paper, we investigated the effect of the gamma irradiation on the optical
properties and energy band gap of PMMA doped by BCG dye thin films. Films of Poly
Methyl Methacrylate doped by 20% BCG doping ratio to prepared concentrations 1x10-3 M
were deposited on glass substrate using free casting method at room temperature. The
optical properties of the films were determined using UV-Visible absorbance and
transmittance spectra at the 300 - 800 nm wavelength range. The linear absorption
coefficient, the extinction coefficient, and the optical and electrical conductivity were
calculated in addition to the energy band gap. The results showed that the optical
properties were increasing by increasing the dose irradiation, while the optical energy gap
was decreasing with the increasing dose irradiation.