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dc.contributor.authorLi, Y.
dc.contributor.authorYu, H.
dc.contributor.authorDeng, D.
dc.contributor.authorHua, Y.
dc.contributor.authorZhao, S.
dc.contributor.authorJia, Guohua
dc.contributor.authorWang, H.
dc.contributor.authorHuang, L.
dc.contributor.authorLi, Y.
dc.contributor.authorLi, C.
dc.contributor.authorXu, S.
dc.identifier.citationLi, Y. and Yu, H. and Deng, D. and Hua, Y. and Zhao, S. and Jia, G. and Wang, H. et al. 2013. Color Point Tuning by Partial Ba2+ Substitution of Ca 2+ in (Ca1-xBax)3(PO 4)2 Phosphor for White Light Emitting Diodes. Journal of Solid State Chemistry. 199: pp. 248-252.

A potential phosphor (Ca1-xBax)3(PO 4)2:Eu2+ was synthesized by a solid-state reaction. X-ray diffraction (XRD) analysis confirmed the formation of (Ca 1-xBax)3(PO4)2 crystal phase. With the Ba2+ content increasing, the bandgap of (Ca 1-xBax)3(PO4)2 increases from 5.5 to 5.9 eV, and the crystal field splitting between the two lowest Eu2+ 5d levels is enhanced from 6085 to 6808 cm-1 in (Ca1-xBax)3(PO4)2. As a result, the emission peak of (Ca1-xBax) 3(PO4)2: Eu2+ shifts from 447 to 550 nm, which means that the emission color alters from blue to yellow. The redshift of the emission band of (Ca1-xBax) 3(PO4)2:Eu2+ was explained based on crystal field strength, covalence, Stokes shift. The results revealed that partial substitution of Ca2+ by Ba2+ ions was therefore a much considerable way to shift the color point of LEDs. © 2013 Elsevier Inc. All rights reserved.

dc.titleColor Point Tuning by Partial Ba2+ Substitution of Ca 2+ in (Ca1-xBax)3(PO 4)2 Phosphor for White Light Emitting Diodes
dc.typeJournal Article
dcterms.source.titleJournal of Solid State Chemistry
curtin.departmentNanochemistry Research Institute
curtin.accessStatusFulltext not available

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