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	Enhanced green upconversion luminescence in tetrahedral liyf4:yb/er nanoparticles by manganese(ii)-doping: the key role of the host lattice
	Zhou, Bin1; Xu, Bing1; He, Huimei1; Gu, Zhanjun2,3; Tang, Bing1; Ma, Ying1; Zhai, Tianyou1
刊名	Nanoscale
	2018-02-14
卷号	10期号:6页码:2834-2840
ISSN号	2040-3364
DOI	10.1039/c7nr07709b
通讯作者	Ma, ying(yingma@hust.edu.cn)
英文摘要	We report the enhancement of green upconversion luminescence in tetrahedral liyf4: yb/er nanoparticles by mn2+ ion doping, which is different from the enhanced single-band red emission dominated by mn2+ ions in cubic nalnf(4): yb/er (ln = y, gd, lu) nanoparticles. the energy levels of the first excited state t-4(1) of mn2+ in tetrahedral liyf4: gd and cubic nagd(y) f-4 are compared by detection of emissions from mn2+ via the energy transition from gd3+ to mn2+ with excitation at 275 nm. the coordination environments of mn2+ in these two host lattices have been investigated by x-ray absorption fine structure measurements. the results demonstrate that the formation of tetrahedral mnf4 in tetragonal liyf4 arising from the replacement of ln(3+) ions with mn2+ ions leads to a higher energy level of the mn2+ t-4(1) state than that in octahedral mnf6 in cubic nayf4. the high-lying excited state of tetrahedral mnf4 is close to the green emitting s-4(3/2) state of er3+ and thus enhances green upconversion emission in tetragonal liyf4: yb/er, while the low-lying excited state of octahedral mnf6 dominates red emission in cubic nayf4: yb/er. these findings provide direct evidence for the key roles of the host lattices and more possibilities in modulating the upconversion behaviour of lanthanide-based nanoparticles by transition-metal ion doping to achieve the desired goals of specific applications.
WOS关键词	NANOCRYSTALS ; FLUORESCENCE ; PHASE ; IONS ; EMISSION ; LIGHT
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000424694400020
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2178017
专题	高能物理研究所
通讯作者	Ma, Ying
作者单位	1.Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Hubei, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Key Lab Biomed Effects Nanomat & Nanosafety, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Natl Ctr Nanosci & Technol, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Bin,Xu, Bing,He, Huimei,et al. Enhanced green upconversion luminescence in tetrahedral liyf4:yb/er nanoparticles by manganese(ii)-doping: the key role of the host lattice[J]. Nanoscale,2018,10(6):2834-2840.
APA	Zhou, Bin.,Xu, Bing.,He, Huimei.,Gu, Zhanjun.,Tang, Bing.,...&Zhai, Tianyou.(2018).Enhanced green upconversion luminescence in tetrahedral liyf4:yb/er nanoparticles by manganese(ii)-doping: the key role of the host lattice.Nanoscale,10(6),2834-2840.
MLA	Zhou, Bin,et al."Enhanced green upconversion luminescence in tetrahedral liyf4:yb/er nanoparticles by manganese(ii)-doping: the key role of the host lattice".Nanoscale 10.6(2018):2834-2840.

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