| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1233585 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2011 | 6 Pages |
Li2O–ZrO2–SiO2: Nd3+ glasses mixed with Nb2O5, Ta2O5 and La2O3 were prepared. Optical absorption and photoluminescence spectra of these glasses have been recorded at room temperature. The Judd–Ofelt theory was successfully applied to characterize Nd3+ spectra of all the three glasses. From this theory, various radiative properties like transition probability A, branching ratio βr, the radiative lifetime τr, for 4F3/2 emission level in the spectra of these glasses has been evaluated. The radiative life time for 4F3/2 level of Nd3+ ions has also been measured and quantum efficiencies were estimated. Among the three glasses studied, the La2O3 mixed glass has exhibited the highest quantum efficiency. The reasons for such higher value have been discussed based on the relationship between the structural modifications taking place around the Nd3+ ions.
Graphical abstractThe optical absorption, photoluminescence of Li2O–ZrO2–SiO2:Nd3+ glasses mixed with three interesting d-block elemental oxides viz., Nb2O5, Ta2O5 and La2O3 have been studied. The quantitative analysis of these results has indicated that La2O3 mixed glasses exhibit better luminescence efficiency among the three glasses studied.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights• The spectroscopic properties Li2O–ZrO2–(Nb2O5, Ta2O5 and La2O3)–SiO2:Nd3+ glasses are studied. • Among various NIR transitions of Nd3+ ion, 4F3/2 → 4I11/2 is found to be more intense for all the three glasses. • Quantum efficiency is found to be the highest for La2O3 mixed glasses among three glasses investigated.
