Open AccessStudy of optical properties of (PMMA) doped by methyl red and methyl blue films
Author(s) -
Ziad T. Khodair,
Mustafa H. Saeed,
Muhammad Hameed Abdul-Allah
Publication year - 2019
Publication title -
iraqi journal of physics
Language(s) - English
Resource type - Journals
eISSN - 2664-5548
pISSN - 2070-4003
DOI - 10.30723/ijp.v12i24.320
Subject(s) - molar absorptivity , materials science , refractive index , doping , absorption edge , attenuation coefficient , methyl red , blueshift , absorption (acoustics) , dielectric , band gap , analytical chemistry (journal) , optics , optoelectronics , nuclear chemistry , chemistry , photoluminescence , physics , organic chemistry , composite material
The effect of doping by methyl red and methyl blue on the absorption spectra and the optical energy gap of poly (methyl methacrylat) PMMA film have been studied. The optical transmission (T%) in the wavelength range 190-900 nm for films deposited by using solvent casting method were measured. The Absorptance data reveals that the doping affected the absorption edge as a red and blue shift in its values. The films show indirect allowed interband transitions that influenced by the doping. Optical constants; refractive index, extinction coefficient and real and imaginary part of dielectric constant were calculated and correlated with doping.