Color-Tunable Luminescence and Energy Transfer Properties of Ca9Mg(PO4)(6)F-2:Eu2+, Mn2+ Phosphors for UV-LEDs

	Color-Tunable Luminescence and Energy Transfer Properties of Ca9Mg(PO4)(6)F-2:Eu2+, Mn2+ Phosphors for UV-LEDs
	Li,Kai ; Geng,Dongling ; Shang,Menmeng ; Zhang,Yang ; Lian,Hongzhou ; Lin,Jun
刊名	journal of physical chemistry c
	2014
卷号	118 期号:20 页码:11026-11034
关键词	LIGHT-EMITTING-DIODES WHITE-LEDS SINGLE-PHASE ENHANCED LUMINESCENCE EMISSION CE3+ TB3+ PHOTOLUMINESCENCE EXCITATION SYSTEM
通讯作者	lin,j
英文摘要	eu2+-, mn2+-activated ca9mg(po4)(6)f-2 (cmpf) phosphors with blue to yellow color-tunable emission properties have been synthesized via high-temperature solid-state reaction method. the crystal structure of ca9mg(po4)(6)f-2 has been identified by rietveld refinement. the different crystallographic sites of eu2+ in cmpf:eu2+ phosphors have been confirmed by virtue of their fluorescence decay lifetimes. the eu2+-activated cmpf phosphors exhibit broad excitation spectra from 200 to 420 nm (which matches well with the uv-based led chips) and emission spectra from 380 to 580 nm centered at 454 nm. energy transfer from eu2+ to mn2+ ions in eu2+, mn2+-codoped cmpf samples is possible because of the spectral overlap between eu2+ emission and mn2+ excitation spectra, and the constant fall of fluorescence decay lifetimes of eu2+ ion with increasing mn2+ concentration demonstrates the occurrence of it, which provides the color-tunable emission from blue to yellow through adjusting mn2+ concentration. the energy transfer mechanism between eu2+ and mn2+ ions is verified to be electric dipole-quadrupole interaction by analyzing the experimental results. the critical distance between them calculated by concentration quenching (14.57 angstrom) and spectral overlap methods (14.90 angstrom) are consistent, which testifies the energy transfer mechanism above from eu2+ to mn2+ is appropriate. these results show cmpf:eu2+, mn2+ phosphors could be anticipated for uv-pumped white-light-emitting diodes (wleds).
收录类别	SCI
语种	英语
公开日期	2015-10-27
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/56193]
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	Li,Kai,Geng,Dongling,Shang,Menmeng,et al. Color-Tunable Luminescence and Energy Transfer Properties of Ca9Mg(PO4)(6)F-2:Eu2+, Mn2+ Phosphors for UV-LEDs[J]. journal of physical chemistry c,2014,118(20):11026-11034.
APA	Li,Kai,Geng,Dongling,Shang,Menmeng,Zhang,Yang,Lian,Hongzhou,&Lin,Jun.(2014).Color-Tunable Luminescence and Energy Transfer Properties of Ca9Mg(PO4)(6)F-2:Eu2+, Mn2+ Phosphors for UV-LEDs.journal of physical chemistry c,118(20),11026-11034.
MLA	Li,Kai,et al."Color-Tunable Luminescence and Energy Transfer Properties of Ca9Mg(PO4)(6)F-2:Eu2+, Mn2+ Phosphors for UV-LEDs".journal of physical chemistry c 118.20(2014):11026-11034.