Nonradiative energy transfer from Tb3+ → Er3+ in calibo glass |
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| Authors: | JC Joshi BC Joshi NC Pandey R Belwal Janardan Joshi |
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| Institution: | Department of Physics, D.S.B. (University) College, Naini Tal, Naini Tal, 263 002, India |
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| Abstract: | Energy transfer studies have been made in a terbium-erbium coactivated calibo-glass system at room temperature and at liquid-air temperature. A study of the emission and decay of 5D4 level of Tb3+ has been made by varying the acceptor (Er3+) concentration. Probabilities and efficiencies of energy transfer as well as donor-acceptor distances have been calculated. At low acceptor concentration the decay of the donor (Tb3+) emission has been found to be diffusion limited. At high acceptor concentration the mechanism governing the transfer is found to be dipole-dipole. |
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| Keywords: | Author to whom all correspondence should be addressed |
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