Mahato, K.K.Rai, AnitaRai, S.B.2025-03-042025-03-04200513861425https://dl.bhu.ac.in/ir/handle/123456789/87735Optical absorption, fluorescence and photoacoustic spectra of Dy 3+ doped in oxyfluoroborate glass has been studied. Lifetime of 4F9/2 level has been measured for different concentration of Dy3+. Effect of concentration quenching on the lifetime and the fluorescence yield has been observed and the mechanism of energy transfer discussed. The energy transfer from Pr3+ to Dy3+ has been observed and explained in a codoped glass containing Pr3+ + Dy 3+. © 2004 Elsevier B.V. All rights reserved.Concentration quenchingEnergy transferLifetimePhotoacoustic spectrumArticlehttps://doi.org/10.1016/j.saa.2004.02.038