Luminescence studies of Eu3+ ions in tellurite glass ceramics

Abstract

The optical properties of Eu[Formula: see text] ions in tellurite glass ceramics with the chemical composition 50TeO2–29B2O3–10ZnO–10Na2O–1Eu2O3-based precursor glasses were presented. These precursor glasses have been prepared by melt quenching method in air, followed by thermal annealing at 550[Formula: see text]C for 12 h, 24 h and 36 h. After thermal annealing process, the micro–crystals appeared in host tellurite glasses. Judd–Ofelt (JO) parameters were calculated from the photoluminescence (PL) spectral measurements. The [Formula: see text], [Formula: see text] and [Formula: see text] parameters have been used to estimate the radiative properties of Eu[Formula: see text] ions in tellurite glass ceramics such as transition probabilities, branching ratio, radiative lifetimes and stimulated emission cross-section. The results of tellurite glass ceramic have been discussed and compared with the similar studies.