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http://nopr.niscpr.res.in/handle/123456789/24200| Title: | Influence of modifiers on optical properties of ZnF2-TeO2 glass system doped with Eu3+ ions |
| Authors: | Kanth, C Laxmi Rao, B Appa Veeraiah, N |
| Issue Date: | Jun-2003 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | ZnF2-MO-TeO2 (MO = PbO, ZnO and CdO) glasses doped with Eu3+ ions have been prepared and samples are characterized by X-ray diffraction and differential scanning calorimetric studies. Optical absorption, photoluminescence, infrared spectra and thermoluminescence studies have been carried out; from the measured intensities of various absorption bands of these glasses the Judd-Ofelt parameters Ω2, Ω4 and Ω6 have been evaluated. The Judd-Oflet theory could successfully be applied to characterise the absorption and luminescence spectra of these glasses. From this theory various radiative properties like transition probability A, branching ratio βr ,the radiative life time τR and the emission cross-section σE for various emission levels of these glasses have been determined and reported. The analysis of these results with the aid of IR spectra and thermoluminescence studies, it has been identified that CdO mixed tellurite glass as the most favourable host for Eu3+ doping and to give high luminescence efficiency. |
| Page(s): | 207-214 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Appears in Collections: | IJEMS Vol.10(3) [June 2003] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJEMS 10(3) 207-214.pdf | 432.89 kB | Adobe PDF | View/Open |
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