Multi-peaked broad-band red phosphor Y3Si6N11:Pr3+ for white LEDs and temperature sensing

doi:10.1039/d0dt03532g

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	Multi-peaked broad-band red phosphor Y3Si6N11:Pr3+ for white LEDs and temperature sensing
	D. S. Sun,L. L. Zhang,Z. D. Hao,H. Wu,H. J. Wu,Y. S. Luo,L. Yang,X. Zhang,F. Liu and J. H. Zhang
刊名	Dalton Transactions
	2020
卷号	49 期号:48 页码:17779-17785
ISSN号	1477-9226
DOI	10.1039/d0dt03532g
英文摘要	The indispensable broad-band red phosphors for LED lighting generally show a long emission tail for wavelengths longer than 650 nm, which consumes excitation energy but contributes little luminance. Here, we report, for the first time, a broad red emission band with a steep falling edge at 652 nm, formed of widely distributed D-1(2) -> H-3(4) emission lines of Pr3+ in Y3Si6N11 due to a large Stark splitting of the H-3(4) (930 cm(-1)) and D-1(2) (725 cm(-1)) levels. The red emission exhibits a 43 nm bandwidth, which is the widest in Pr3+-doped phosphors reported so far. The red Y3Si6N11:Pr3+ phosphor was applied for the fabrication of 310 nm UV chip-based white LEDs, and a high color rendering index of 96 at a low correlated color temperature of 4188 K was achieved. Furthermore, a temperature-sensing scheme was proposed based on the temperature-dependent intensity ratios of the emission lines from the thermally coupled and large Stark splitting levels of the D-1(2) state. Relative sensitivities as a function of temperature were studied in the range of 93-473 K. The findings of this study indicate that Y3Si6N11:Pr3+ is an attractive broad-band red phosphor for both high color rendering white LEDs and temperature sensing applications.
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语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/64708]
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	D. S. Sun,L. L. Zhang,Z. D. Hao,H. Wu,H. J. Wu,Y. S. Luo,L. Yang,X. Zhang,F. Liu and J. H. Zhang. Multi-peaked broad-band red phosphor Y3Si6N11:Pr3+ for white LEDs and temperature sensing[J]. Dalton Transactions,2020,49(48):17779-17785.
APA	D. S. Sun,L. L. Zhang,Z. D. Hao,H. Wu,H. J. Wu,Y. S. Luo,L. Yang,X. Zhang,F. Liu and J. H. Zhang.(2020).Multi-peaked broad-band red phosphor Y3Si6N11:Pr3+ for white LEDs and temperature sensing.Dalton Transactions,49(48),17779-17785.
MLA	D. S. Sun,L. L. Zhang,Z. D. Hao,H. Wu,H. J. Wu,Y. S. Luo,L. Yang,X. Zhang,F. Liu and J. H. Zhang."Multi-peaked broad-band red phosphor Y3Si6N11:Pr3+ for white LEDs and temperature sensing".Dalton Transactions 49.48(2020):17779-17785.