Luminescence in NaLn(SO4)2H2O: A host lattice with high-energy vibrations |
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| Authors: | Hao Zhiran GJ Dirksen G Blasse |
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| Institution: | Physical Laboratory, State University, P.O. Box 80.000, 3508 TA Utrecht, The Netherlands |
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| Abstract: | The luminescence of Ce3+, Sm3+, Eu3+, Gd3+, Tb3+, and Dy3+ in NaLn(SO4)2H2O (Ln = lanthanide) is reported. Only Ce3+, Gd3+, and Tb3+ show efficient emission. This is explained in terms of an energy-gap law. Energy transfer is studied in several codoped compositions. The mutual transfer between Gd3+ ions is the only one encountered with high probability. The several transfers are discussed and where possible their rates are calculated. |
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