Spectroscopic properties of a Ce3+Tm3+ center in CsCdBr3 crystals: Absorption,emission, and energy transfer |
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| Authors: | Arlene M. McPherson Gary L. McPherson |
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| Affiliation: | Department of Chemistry, Tulane University, New Orleans, LA 70118, USA |
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| Abstract: | When crystals of CsCdBr3 are doped with trivalent cerium and thulium, it appears that Ce3+-vacancy-Tm3+ centers are formed. A very efficient cerium to thulium energy transfer is observed in this center when the doped crystals are irradiated at the energy (～ 27800 cm?1) corresponding to the 4f → 5d transition of Ce3+. Spectroscopic studies indicate that the energy transfer begins to diminish when the temperature is raised above 100 K. At room temperature the doped crystals show no detectable energy transfer. |
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