Efficient Blue-emitting Phosphor SrLu2O4 Ce3+ with High Thermal Stability for Near Ultraviolet (similar to 400 nm) LED-Chip based White LEDs

doi:10.1038/s41598-018-28834-8

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	Efficient Blue-emitting Phosphor SrLu2O4 Ce3+ with High Thermal Stability for Near Ultraviolet (similar to 400 nm) LED-Chip based White LEDs
	Zhang, S.; Hao, Z. D.; Zhang, L. L.; Pan, G. H.; Wu, H. J.; Zhang, X.; Luo, Y. S.; Zhang, L. G.; Zhao, H. F.; Zhang, J. H.
刊名	Scientific Reports
	2018
卷号	8 页码:8
关键词	photoluminescence properties energy-transfer luminescence Science & Technology - Other Topics
ISSN号	2045-2322
DOI	10.1038/s41598-018-28834-8
英文摘要	Blue-emitting phosphors for near ultraviolet (NUV) based tri-color RGB phosphor blend converted white light emitting diodes (LEDs) have been extensively investigated in the past few years. LED chip peaked near 400 nm is the most efficient among the NUV chips currently. However, most of blue phosphors show inefficient excitation around 400 nm. Herein, a novel blue phosphor SrLu2O4:Ce3+ matching well with near 400 nm chip and showing high thermal stability has been developed. The photoluminescence spectrum presents a broad emission band peaking at 460 nm with a bandwidth of nearly 90 nm. By optimizing the Ce3+ concentration, an internal quantum efficiency (IQE) as high as 76% was achieved. Furthermore, 86% of the room-temperature emission intensity is still maintained at 150 degrees C, indicating a good thermal stability and practicality. A series of white LEDs were fabricated based on 405 nm chips coated with a blend of the new blue phosphor with the commercial yellow and red phosphors. High color rendering indexes (>= 90) were achieved while the correlated color temperature was tuneable in the range of 3094 to 8990 K. These results suggest that SrLu2O4:Ce3+ can be utilized as a blue-emitting phosphor in NUV based white LEDs.
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/60646]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Zhang, S.,Hao, Z. D.,Zhang, L. L.,et al. Efficient Blue-emitting Phosphor SrLu2O4 Ce3+ with High Thermal Stability for Near Ultraviolet (similar to 400 nm) LED-Chip based White LEDs[J]. Scientific Reports,2018,8:8.
APA	Zhang, S..,Hao, Z. D..,Zhang, L. L..,Pan, G. H..,Wu, H. J..,...&Zhang, J. H..(2018).Efficient Blue-emitting Phosphor SrLu2O4 Ce3+ with High Thermal Stability for Near Ultraviolet (similar to 400 nm) LED-Chip based White LEDs.Scientific Reports,8,8.
MLA	Zhang, S.,et al."Efficient Blue-emitting Phosphor SrLu2O4 Ce3+ with High Thermal Stability for Near Ultraviolet (similar to 400 nm) LED-Chip based White LEDs".Scientific Reports 8(2018):8.