Static energy transfer for Mn : Pr system in Phosphate glasses |
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Authors: | G Ajith Kumar P R Biju Gin Jose N V Unnikrishnan |
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Affiliation: | School of Pure and Applied Physics, Mahatma Gandhi University, Kottayam 686560, India |
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Abstract: | The process of energy transfer from divalent manganese to trivalent praseodymium ions is studied with the help of Forster–Dexter theory. Some of the important energy transfer parameters such as transfer probability (PSA), quantum yield of energy transfer (μ), critical radius (R0) and critical concentration of the acceptor (CA) are evaluated for the energy transfer pairs Mn2+ : Pr3+, Pr3+ : Pr3+ in phosphate glasses. The transfer of energy from Mn2+ to Pr3+ was confirmed by recording the fluorescence decay curves of Mn2+ emission corresponding to various activator concentrations which show a non-exponential behaviour. Large values of transfer probabilities and transfer efficiencies suggest that Mn2+ ion can act as a good sensitizer to Pr3+ ion in phosphate glass. |
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Keywords: | Phosphate glasses Sensitized luminescence Forster-Dexter theory |
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