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Information × Registration Number 2118U002107, Article popup.category Стаття Title popup.author popup.publication 01-01-2018 popup.source_user Сумський державний університет popup.source http://essuir.sumdu.edu.ua/handle/123456789/71485 popup.publisher Sumy State University Description In this work, thin films of solid polymer electrolyte made of pure poly (ethylene oxide) doped with cesium iodide (CsI) were prepared using casting method. The films contain different (CsI) concentrations: 0 %, 1 %, 4 %, 8 %, 12 %, and 16 % by weight. The optical properties such as the absorption coefficient, energy gap, refractive index, extinction coefficient, and dielectric constants have been determined in the wavelength range (300 – 800) nm. The results obtained showed that the optical constants change with increase of cesium iodide concentration. The absorption spectra of thin films at different CsI concentrations showed changes in the wavelength range. The optical dispersion parameters have been analyzed by the single oscillator model. The value of Eo and Ed were found and the other parameters have been determined by Wemple-DiDomenico method. popup.nrat_date 2025-03-24 Close