Abstract
Glasses of (Se90Te10)95M5 (M = In, Sb, and S) are set by melt-quench procedure. The incorporated elements were selected as examples from basic metal, semimetal, and nonmetal groups, respectively. Films of these glasses were evaporated onto glass substrates. The nature of the films was affirmed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The amorphous nature of the prepared films was confirmed by XRD measurements. Absorption coefficient, α, and refractive index, n, were estimated for all (Se90Te10)95M5 (M = In, Sb, and S) films. It is found that the optical band gap Eg decreases in the basic metal and semimetal groups, whereas it increases in the nonmetal group. The optical constants were estimated according to the single-oscillator model. The estimated results confirmed that the modified samples can be employed in the optoelectronic applications.
Glasses of (Se90Te10)95M5 (M = In, Sb, and S) are set by melt-quench procedure. The incorporated elements were selected as examples from basic metal, semimetal, and nonmetal groups, respectively. Films of these glasses were evaporated onto glass substrates. The nature of the films was affirmed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The amorphous nature of the prepared films was confirmed by XRD measurements. Absorption coefficient, α, and refractive index, n, were estimated for all (Se90Te10)95M5 (M = In, Sb, and S) films. The optical constants were estimated according to the single-oscillator model. The estimated results confirmed that the modified samples can be employed in the optoelectronic applications. [Display omitted]
•(Se90Te10)95M5 glasses with different types of elements (M = In, Sb, and S) were fabricated.•Films of (Se90Te10)95M5 were studied.•Optical properties of (Se90Te10)95M5 films were studied.•Optical band gap decreases in basic metal and semimetal groups, whereas it increases with nonmetal additive group.•These studies demonstrated that doping process is considered as a suitable tool to control the properties of these films.