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dc.contributor.authorCui, Z.
dc.contributor.authorJia, Guohua
dc.contributor.authorDeng, D.
dc.contributor.authorHua, Y.
dc.contributor.authorZhao, S.
dc.contributor.authorHuang, L.
dc.contributor.authorWang, H.
dc.contributor.authorMa, H.
dc.contributor.authorXu, S.
dc.identifier.citationCui, Z. and Jia, G. and Deng, D. and Hua, Y. and Zhao, S. and Huang, L. and Wang, H. et al. 2012. Synthesis and luminescence properties of glass ceramics containing MSiO3:Eu2 (M=Ca, Sr, Ba) phosphors for white LED. Journal of Luminescence. 132 (1): pp. 153-160.

Eu2 doped silicate glasses were prepared of the system 52SiO248MO: xEu2(in molar ratio, M=Ca, Sr, Ba; x=1, 3, 5, 7, 9) by a high temperature melt-quenching method in a reducing atmosphere. Glass ceramics containing MSiO3:Eu2(M=Ca, Sr, Ba) nano-phosphors were obtained after the heat treatment of the glass samples. The excitation, emission spectra and lifetime decay curves of 4f65d 1?4f7 of Eu2 were measured and interpreted with respect to their crystal structures and multi-site occupations of divalent europium in the hosts. Their excitation bands mainly extend from 450 to 250 nm, which is adaptable to the main emission region of the UV LED chip. With UV light excitation, the Eu2 emission in CaSiO3, SrSiO 3 and BaSiO3 shows blue, green and yellow colors centered at 440, 505 and 555 nm, respectively. The critical Eu2concentration was studied and determined to be x=5 for both CaSiO3 and SrSiO 3 and x=7 for BaSiO3 phosphors. The results show that the Eu2 doped glass ceramic phosphors containing MSiO3 (M=Ca, Sr, Ba) nano-crystals can be used as potential matrix materials for a high power white LED pumped by the UV LED chip. © 2011 Elsevier B.V. All rights reserved.

dc.titleSynthesis and luminescence properties of glass ceramics containing MSiO3:Eu2 (M=Ca, Sr, Ba) phosphors for white LED
dc.typeJournal Article
dcterms.source.titleJournal of Luminescence
curtin.departmentNanochemistry Research Institute
curtin.accessStatusFulltext not available

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