Interplay between local environments and photoluminescence of Eu2+ in Ba2Zr2Si3O12: blue shift emission, optimal bond valence and luminescence mechanisms

	Interplay between local environments and photoluminescence of Eu2+ in Ba2Zr2Si3O12: blue shift emission, optimal bond valence and luminescence mechanisms
	Zhang,Yang; Li,Xuejiao; Li,Kai; Lian,Hongzhou; Shang,Mengmeng; Lin,Jun
刊名	journal of materials chemistry c
	2015
卷号	3 期号:14 页码:3294-3303
关键词	LIGHT-EMITTING-DIODES EQUAL-TO 1 WHITE-LIGHT ENERGY-TRANSFER OPTICAL-PROPERTIES OXYNITRIDE PHOSPHORS INORGANIC-COMPOUNDS CRYSTAL-STRUCTURE SIZE-MISMATCH SINGLE-PHASE
通讯作者	lin,j
英文摘要	ba2(1-x)zr2si3o12(bzso): xeu(2+) (x = 0.005-0.06) phosphors have been prepared by a high temperature solid state reaction. using x-ray powder diffraction, the structural properties including the phase purity were analyzed through rietveld analysis. the bzso: eu2+ phosphors exhibit a broad excitation band ranging from 200 to 450 nm, and an intense asymmetric green emission band centered at 501 nm under an excitation of 365 nm. the optimum doping concentration of eu2+ was found for x = 0.03. the detailed energy transfer mechanism among eu2+ in bzso is found to be a dipole-dipole mechanism, and the critical distance (r-c) for the eu2+ ions calculated by the concentration quenching and spectral overlap methods are 20.45 and 25.83 angstrom, respectively. furthermore, the unexpected blue shift (from green to cyan) in the emission and the increase in the thermal quenching barrier upon cation substitutions (ca2+/sr2+ for ba2+) in the bzso: 0.03eu(2+) system have been investigated, which is due to the variation of the crystal field strength that the 5d orbital of the eu2+ ion experiences. the underlying mechanism is ascribed to the differences between the average structure and the local coordination environments on the activator ions (eu2+), as confirmed by the refinement results. considering the merits of the near-uv light excitation, broad band emission, and good thermal stability, these materials have a potential application as white light emitting diode phosphors.
收录类别	SCI
语种	英语
WOS记录号	WOS:000351871600008
公开日期	2016-05-31
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/65097]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Zhang,Yang,Li,Xuejiao,Li,Kai,et al. Interplay between local environments and photoluminescence of Eu2+ in Ba2Zr2Si3O12: blue shift emission, optimal bond valence and luminescence mechanisms[J]. journal of materials chemistry c,2015,3(14):3294-3303.
APA	Zhang,Yang,Li,Xuejiao,Li,Kai,Lian,Hongzhou,Shang,Mengmeng,&Lin,Jun.(2015).Interplay between local environments and photoluminescence of Eu2+ in Ba2Zr2Si3O12: blue shift emission, optimal bond valence and luminescence mechanisms.journal of materials chemistry c,3(14),3294-3303.
MLA	Zhang,Yang,et al."Interplay between local environments and photoluminescence of Eu2+ in Ba2Zr2Si3O12: blue shift emission, optimal bond valence and luminescence mechanisms".journal of materials chemistry c 3.14(2015):3294-3303.