Proceedings of the 7th International Conference on Education, Management, Information and Mechanical Engineering (EMIM 2017) 2017
DOI: 10.2991/emim-17.2017.16
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Photoluminescence of Red-Emitting Phosphor Sr2CeO4: Eu3+, Sm3+ for Light-Emitting Diodes

Abstract: Abstract. The red-emitting phosphor Sr2CeO4: Eu3+, Sm3+ was synthesized by conventional high-temperature solid-state method. X-ray diffraction, and photoluminescence spectra were used to characterize the as-synthesized phosphor. In Eu3+ singly doped Sr2CeO4 phosphors, Eu3+ ion showed a weaker 7F0-5L6 transition at 395 nm with a narrow line and could not be efficiently excited by the NUV-LED chip. In Sm3+, Eu3+ co-doped Sr2CeO4 phosphors, the energy transfer from Sm3+ to Eu3+ in Sr2CeO4 host is observed and inv… Show more

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