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Crystal structure and luminescence properties of the blue-green-emitting Ba-9(Lu, Y)(2)Si6O24:Ce3+ phosphor
Xu, H. W.; Z. Zhou; Y. F. Liu; Q. X. Liu; Z. Y. He; S. Wang; L. Y. Huang and H. B. Zhu
2017
Source PublicationLuminescence
Volume32Issue:5
AbstractSamples of the Ba-9(Lu2-xYx)Si6O24:Ce3+ (x=0-2) blue-green phosphors were synthesized by solid-state reactions. All the samples exhibited a rhombohedral crystal structure. As the Y3+ concentration increased, the diffraction peaks shifted to the small angle region and the lattice parameters increased due to the larger ionic radius of Y3+ (r=0.900 angstrom) compared with that of Lu3+ (r=0.861 angstrom). Under 400nm excitation, samples exhibited strong blue-green emissions around 490nm. The emission bands had a slight blue shift that resulted from weak crystal-field splitting with increasing Y3+ concentration. Luminescence intensity and quantum efficiency (QE) decreased with increasing Y3+ concentration. The internal QE decreased from 74 to 50% and the external QE decreased from 50 to 34% as x increased from 0 to 2. The thermal stability of the Lu series was better than that of the Y-series. The excitation band peak around 400nm matched well with the emission light from the efficient near-ultraviolet (NUV) chip. These results indicate promising applications for these NUV-based white light-emitting diodes.
Indexed Bysci ; ei
Language英语
Document Type期刊论文
Identifierhttp://ir.ciomp.ac.cn/handle/181722/59348
Collection中科院长春光机所知识产出
Recommended Citation
GB/T 7714
Xu, H. W.,Z. Zhou,Y. F. Liu,et al. Crystal structure and luminescence properties of the blue-green-emitting Ba-9(Lu, Y)(2)Si6O24:Ce3+ phosphor[J]. Luminescence,2017,32(5).
APA Xu, H. W..,Z. Zhou.,Y. F. Liu.,Q. X. Liu.,Z. Y. He.,...&L. Y. Huang and H. B. Zhu.(2017).Crystal structure and luminescence properties of the blue-green-emitting Ba-9(Lu, Y)(2)Si6O24:Ce3+ phosphor.Luminescence,32(5).
MLA Xu, H. W.,et al."Crystal structure and luminescence properties of the blue-green-emitting Ba-9(Lu, Y)(2)Si6O24:Ce3+ phosphor".Luminescence 32.5(2017).
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