Sri Pallavi A.V.,Acharya Nagarjuna University |
Flower G.L.,Maris Stella College Autonomous |
Rajeswara Rao D.,Acharya Nagarjuna University |
Veeraiah N.,Acharya Nagarjuna University
Transactions of the Indian Ceramic Society | Year: 2013
The glasses of the composition 30PbO-65B2O3-0.5SiO2-(4.5-x)Al2O3-xSm2O3 with x varying from 0 to 2 mol% have been synthesized. Optical absorption and photoluminescence spectra in the spectral range 300-2200 nm and 450-700 nm, respectively, were studied at ambient temperature. The Judd-Ofelt theory was applied to characterize these spectra. The analysis of the results indicated that the glasses containing maximum concentration of Al3+ ions in octahedral positions is preferable for achieving the highest luminescence efficiency. © 2013 Copyright The Indian Ceramic Society.