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Crystal structure evolution and luminescence property of Ce3+-doped Y2O3-Al2O3-Sc2O3 ternary ceramics
Liu, YL; Hu, S; Zhang, YL; Wang, ZJ; Zhou, GH; Wang, SW
2020-03-01
Source PublicationJOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN0955-2219
Issue3Pages:840
SubtypeArticle
AbstractCe3+-doped Y2O3-Al2O3-Sc2O3 ternary ceramics with varying Sc2O3 were prepared via solid-state-reactive method. Their constitutions, crystal structures, microstructures and luminescence properties were thoroughly investigated by powder X-ray diffraction, Sc-45 and Al-27 solid-state nuclear magnetic resonance (NMR), scanning electron microscope (SEM) as well as photoluminescence (PL) characterizations. Single-phased YSAG transparent ceramics with garnet structure and homogeneous microstructures can be obtained. The NMR results suggest that partial [AlO6] octahedrons are converted into [AlO4] tetrahedrons with increased Sc3+ . Partial Sc3+ occupies the remaining octahedral sites, the other Sc3+ occupies the dodecahedral sites. The luminescence spectra of the as-prepared ceramics show broadened emission bands with excessive Sc3+. incorporation. More significantly, the solubility of Ce3+ in garnet ceramics extensively increases due to the incorporation of Sc3+, leading to a considerable red-shift and broadening of emission spectra with little luminescence decline, indicating that the new ceramic phosphors are promising for white-light illumination with improved color rendering index.
DOI10.1016/j.jeurceramsoc.2019.10.022
WOS KeywordPOWDER DIFFRACTION ; NMR ; MICROSTRUCTURE ; OXIDES
Language英语
WOS Research AreaMaterials Science
PublisherELSEVIER SCI LTD
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28275
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Liu, YL,Hu, S,Zhang, YL,et al. Crystal structure evolution and luminescence property of Ce3+-doped Y2O3-Al2O3-Sc2O3 ternary ceramics[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2020(3):840.
APA Liu, YL,Hu, S,Zhang, YL,Wang, ZJ,Zhou, GH,&Wang, SW.(2020).Crystal structure evolution and luminescence property of Ce3+-doped Y2O3-Al2O3-Sc2O3 ternary ceramics.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY(3),840.
MLA Liu, YL,et al."Crystal structure evolution and luminescence property of Ce3+-doped Y2O3-Al2O3-Sc2O3 ternary ceramics".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY .3(2020):840.
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