Radioluminescence of SrAl2O4:Ln3+ (Ln = Eu, Sm, Dy) phosphor ceramic
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Date
2011
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Abstract
Phosphors for radiation detection require efficient energy transfer from the ionization track to the luminescent centers. In this work, the radioluminescence (RL) spectra of SrAl2O4 phosphor ceramics doped with individual trivalent rare earth element (REE) ions (Sm, Eu and Dy) are reported at the room temperature. Although there is some intrinsic UV/blue emission from the host lattice, the dominant signals are from the rare-earth sites, with signals characteristic of the REE2+ and REE3+ states. The shapes of the emission bands are different for each dopant. The sharp emission properties show that the SrAl2O 4 is a suitable host for rare-earth ion doped phosphor material. © 2011 Elsevier B.V. All rights reserved.
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Aluminum compounds , Ceramic materials , Doping (additives) , Energy transfer , Light emission , Metal ions , Phosphors , Rare earths , Efficient energy transfer , Ionization track , Luminescent centers , Phosphor materials , Radiation detection , Radio-luminescence , Radioluminescence spectra , Rare earth ions , Strontium compounds