20 بهمن 1401
داريوش سوري

داریوش سوری

مرتبه علمی: استاد
نشانی:
تحصیلات: دکترای تخصصی / فیزیک ماده چگال
تلفن:
دانشکده: دانشکده علوم پایه

مشخصات پژوهش

عنوان
Optical properties of tellurovanadate–molybdate glasses
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Optical properties
سال
2022
مجله JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
پژوهشگران داریوش سوری

چکیده

In this paper, tellurovanadate–molybdate oxide glasses of the form xMoO3–(60 − x)V2O5–40TeO2 with (0 ≤ x ≤ 60 mol%) were fabricated using melt-quenching technique. The optical absorption spectra of samples were taken within the wavelength range of 190–1100 nm. Then, derivation of absorption spectrum fitting method (shortened as DASF) was used as more precise and crucial approach to determine the bandgap and also the exact nature of charge carriers transition. Results show that the optical bandgap has a minimum value equal to 2.38 eV for x = 10. Also, some opto-physical quantities such as the width of the band tails (Urbach energy), molar volume, oxygen packing density, metallization criterion (M), molar refraction (RM), optical basicity and electronic polarizability were obtained for the under studied glasses; results imply on the optimal sample owing x = 10 mol% of MoO3 in optical applications such as optical fibers.