eng Science and Education Publishing Journal of Materials Physics and Chemistry 2333-4444 2017-08-01 5 1 32 38 10.12691/jmpc-5-1-4 JMPC2017514 article Imad Al - Deen Hussein Ali Al - Saidi al_saidi_imad@yahoo.com 1 Raghad Jabar 1 Department of Physics, College of Education for Pure Sciences, University of Basrah, Basrah, Iraq The optical properties of the pure poly(methylmethcrylate) (PMMA) polymer film and PMMA polymer films doped with Solochrome Dark Blue dye at different concentrations were investigated. The films were prepared using the casting technique. The optical absorption and transmission spectra of these films were recorded in the wavelength range 300 - 900 nm for different concentrations using UV-Vis double - beam spectrophotometer. The optical parameters of the Solochrome Dark Blue dye - doped polymer films, reflectance (R), absorption coefficient (α), extinction coefficient (κ), refractive index (n), optical and electrical conductivities (σopt and σelect),, and optical energy band gap (Eg), were calculated. The effect of the dye concentration on these parameters was studied. The obtained results show that the Solochrome Dark Blue dye is a promising material for applications in photonic and optoelectronic devices. http://pubs.sciepub.com/jmpc/5/1/4/jmpc-5-1-4.pdf optical properties optical parameters Solochrome Dark Blue dye dye - doped polymer films optical energy band gap