Luminescence and energy transfer studies of Ce3+/Dy3+ doped fluorophosphate glasses
作者： V. Rajeswara Rao , L. Lakshmi Devi , C.K. Jayasankar , Wisanu Pecharapa , J. Kaewkhao
DOI: 10.1016/J.JLUMIN.2018.11.053
关键词: Excitation 、 Ion 、 Doping 、 Radiant energy 、 Luminescence 、 Radiative transfer 、 Emission spectrum 、 Quantum yield 、 Analytical chemistry 、 Materials science
摘要: Abstract The fluorophosphate (PKABfNf:P2O5+K2O+Al2O3+BaF2+NaF2) glasses doped with single and co-doped (Ce and/or Dy) were prepared by conventional melt quenching technique characterized their luminescence properties. emission spectra of glass (PKABfNfCeDy) showed a broad blue band Ce3+ ions combined the sharp peaks Dy3+ ions. Judd-Ofelt (JO) intensity parameters have been obtained from optical absorption 1.0 mol% (PKABfNfDy1.0) glass. JO theory has used to find radiative properties PKABfNfDy1.0 using Futchbauer-Ladenbergh formula. (Ce3+/Dy3+) exhibit energy transfer (ET) upon UV excitation then is increased increase in ion concentration. ET mechanism analyzed. theoretical efficiency quantum yield values calculated spectrum glasses. These results suggest that PKABfNfCeDy are promising candidate for commercial white light applications.
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