Mechanism of energy transfer in Sr2CeO4:Eu3+ phosphor |
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| Affiliation: | 1. Institute of Experimental Physics, University of Gdansk, Poland;2. Institute of Physics, Polish Academy od Science, Warsaw, Poland;3. Institute of Physics, N. Copernicus University, Torun, Poland;4. Institute of Experimental Physics, University of Gdansk, Poland;1. Department of Advanced Organic Materials Engineering, Chungnam National University, Daejeon 305-764, South Korea;2. Department of Physical Sciences, Bannari Amman Institute of Technology, Sathyamangalam 638 401, Erode Dt, Tamil Nadu, India;1. National Laboratory of Physical Sciences at Microscale and School of Life Sciences, University of Science and Technology of China, Hefei 230027, China;2. High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, China |
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| Abstract: | Blue–white phosphor Sr2CeO4 belongs to a particular class of optical materials whose luminescence is governed by optical transitions associated with the electron charge transfer. The originality of its crystallographic structure, a chain-like sequence of luminescent centers, permits an effective transfer of the electronic excitation energy from the host to doped centers. Sr2CeO4, рure and doped with Eu3+-ions of different concentrations, was synthesized by the Pechini citrate-gel method. The luminescence spectra and luminescence decay curves of Sr2CeO4 and Sr2CeO4:Eu3+ at 300 and 80 K were investigated. The performed experiments revealed the Förster nonradiative energy transfer under the energy migration condition from the crystal host to the doped europium ions. |
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