Luminescence, spectroscopic properties and reddish-orange emission from Eu3+ ion doped tellurite and fluorotellurite glasses: A comparative study

초록

In this study, the properties of tellurite (TeEu) glass and fluorotellurite (FTeEu) were compared with the addition of 2 mol% of europium. The chemical compositions of the samples were pre-pared by two formulars: 53TeO(2)-10ZnO-35BaO-2Eu(2)O(3) (TeEu) and 53TeO(2)-10ZnF(2)-35BaO-2Eu(2)O(3 )(FTeEu) which were prepared by glass casting technique. The results showed that the molar volume and refractive index of the FTeEu sample were higher than TeEu, with values 29.0553 cm(3)/mol and 1.806, respectively. Measuring the UV-VIS-NIR absorption spectra with a proven measured in air atmosphere in the range of 200-2500 nm demonstrated an extension of intensity of absorption bands with ZnF(2 )contents increased. The spectroscopic studies consisted of two main themes: Judd-Ofelt and phonon side-band analyses. The results of the Phonon Side Band (PSB) spectral assays associated with the F-7(0)-> D-5(2) transition of the Eu3+ ion showed that the phonon energy of the FTeEu sample was lower than TeEu, with value 667 cm(-1). The relationship of the JO intensity parameter of the FTeEu sample is on the omega(2) > omega(4) > omega(6). The decay time and CIE coordinates, had calculated for prepared glass samples. In view of the results of our study, the FTeEu samples is a more suitable choice for reddish-orange laser materials, telecommunication applications and optical device applications.

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