Narin, P.Kutlu, E.Atmaca, G.Lişesivdin, S. B.Özbay, Ekmel2018-04-122018-04-1220170030-4026http://hdl.handle.net/11693/37382In this study, effects of some impurity atoms included in IIIA group such as Al, Ga, and In on the optical properties of the β-Si3N4 structure have been discussed. The calculations were made using Density Functional Theory (DFT) in 0–15 eV range and local density approximation (LDA) as the exchange-correlation. Using the real and the imaginary parts of the complex dielectric function, the basic optical properties of β-Si3N4 such as dielectric coefficient, refractive index, absorption, reflection coefficients have been investigated. As a result of the calculations, it is determined that optical properties of structure have been significantly changed with doping.EnglishAb initioDFTOptical propertiesβ-Si3N4Article10.1016/j.ijleo.2017.08.056