1. Luminescence characteristics of doubly doped KLuS2:Eu, RE (RE = Pr, Sm, Ce).
- Author
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Havlák, L., Jarý, V., Rejman, M., Mihóková, E., Bárta, J., and Nikl, M.
- Subjects
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LUMINESCENCE , *SINGLE crystals , *EUROPIUM , *DOPING agents (Chemistry) , *PRASEODYMIUM , *LIGHT emitting diodes - Abstract
KLuS 2 single crystals doped with divalent europium and co-doped with trivalent praseodymium, samarium or cerium were synthesized in the form of crystalline hexagonal platelets as interesting candidates for white LED solid state lighting. Luminescence characteristics in UV/Vis, including radioluminescence, photoluminescence excitation and emission spectra and photoluminescence decays, were measured in the broad concentration and temperature interval revealing presence of thermally stable emission features of both Eu 2+ and co-dopants in a single KLuS 2 host. Energy transfer from Eu 2+ to Pr 3+ , Sm 3+ and Ce 3+ is identified. CIE xy -coordinates are used to compare effects of dopants on resulting spectrum. The application potential in white LEDs phosphors is discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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