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	Hydrothermal synthesis and size-enhanced chromaticity of Sr2ZnSi2O7 : Eu3+ nanoparticles
	Wan, Junxi ; Yao, Youwei ; Tang, Guoyi ; Qian, Yitai
	2010-05-11 ; 2010-05-11
关键词	doping nanostructures hydrothermal crystal growth nanomaterials phosphors LUMINESCENT PROPERTIES NANOCRYSTALLINE Y2O3-EU YBO3-EU NANOCRYSTALS OPTICAL-PROPERTIES LONG AFTERGLOW PHOSPHORS DY3+ SURFACE GROWTH CORE Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter
中文摘要	Red phosphor Sr2ZnSi2O7:Eu3+ nanoparticles with an average diameter of 20 nm were successfully synthesized via a low-temperature hydrothermal route in order to understand the underlying relationship between size and luminescent properties. The nanometer-sized particles result in a distinct improvement in chromaticity and a high quenching concentration. According to emission spectra, the relative intensity of the D-5(0)-> F-7(2) to D-5(0)-> F-7(1), transitions in nanometer-sized phosphors is higher than that of the corresponding bulk material. The better chromaticity results from the more distorted lattices and relatively lower crystal symmetry around the Eu3+ ions, which is ascribed to the large surface area due to the nanometer size of the phosphor. Moreover, the nanometer-sized Sr2ZnSi2O7:Eu3+ red phosphor exhibits a shorter fluorescent lifetime and a blue-shift in excitation spectra compared to that of its bulk counterpart. These results indicate that size-induced enhancement of luminescent properties is an efficient way to obtain red phosphors with better chromaticity.
语种	英语 ; 英语
出版者	AMER SCIENTIFIC PUBLISHERS ; STEVENSON RANCH ; 25650 NORTH LEWIS WAY, STEVENSON RANCH, CA 91381-1439 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/26307]
专题	清华大学
推荐引用方式 GB/T 7714	Wan, Junxi,Yao, Youwei,Tang, Guoyi,et al. Hydrothermal synthesis and size-enhanced chromaticity of Sr2ZnSi2O7 : Eu3+ nanoparticles[J],2010, 2010.
APA	Wan, Junxi,Yao, Youwei,Tang, Guoyi,&Qian, Yitai.(2010).Hydrothermal synthesis and size-enhanced chromaticity of Sr2ZnSi2O7 : Eu3+ nanoparticles..
MLA	Wan, Junxi,et al."Hydrothermal synthesis and size-enhanced chromaticity of Sr2ZnSi2O7 : Eu3+ nanoparticles".(2010).

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