南方科技大学知识苑(SUSTech KC): Atomic deciphering of cation exchange mechanism in upconversion nanoparticles

题名	Atomic deciphering of cation exchange mechanism in upconversion nanoparticles
作者	Guan，Ming1 ; Molokeev，Maxim S.2,3; Zhou，Jiajia 1
通讯作者	Zhou，Jiajia
发表日期	2020-08-01
DOI	10.1016/j.jlumin.2020.117289
发表期刊	JOURNAL OF LUMINESCENCE 影响因子和分区
ISSN	0022-2313
EISSN	1872-7883
卷号	224
摘要	Transition metal ion doping in upconversion nanoparticles (UCNPs) provides an effective way to enhance the luminescence for their wide array of applications. However, the doping sites of transition metal ions have not been comprehensively explored, and commonly assumed that transition metal ions replace the trivalent lanthanides within the lattice. Here we report that cation exchange of transition metal (Mn) in β-NaYF:Yb/Er UCNPs occurs through alkaline metal (Na) replacement, via 2Na ↔ Mn + Vacancy reaction. This process distorts the LnF polyhedrons and tailors the surrounding environment around the trivalent lanthanides, thereby improving the upconversion intensity from active lanthanides. Further confirmed by core-shell design and spectroscopic study, we prove that the transition–alkaline metal exchange enables both the emission enhancement and transition probability variation of activators.
关键词	Cation exchange Mn2+ Rietveld refinement β-NaYF4 nanoparticles
相关链接	[Scopus记录]
收录类别	SCI ; EI
语种	英语
学校署名	第一 ; 通讯
资助项目	Science and Technology Innovation Committee of Shenzhen[KQTD20170810110913065] ; Australian Research Council (ARC)[DE 180100669] ; China Scholarship Council[201506400025]
WOS研究方向	Optics
WOS类目	Optics
WOS记录号	WOS:000541168300019
出版者	ELSEVIER
ESI学科分类	PHYSICS
Scopus记录号	2-s2.0-85083307220
来源库	Scopus
引用统计	被引频次[WOS]：3
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/137875
专题	南方科技大学工学院_生物医学工程系
作者单位	1.UTS-SUStech Joint Research Centre for Biomedical Materials & Devices,Southern University of Science and Technology,Shenzhen,518055,China 2.Laboratory of Crystal Physics,Kirensky Institute of Physics,SB RAS,Krasnoyarsk,660036,Russian Federation 3.Siberian Federal University,Krasnoyarsk,79 Svobodny Ave.,660041,Russian Federation
第一作者单位	南方科技大学
通讯作者单位	南方科技大学
第一作者的第一单位	南方科技大学
推荐引用方式 GB/T 7714	Guan，Ming,Molokeev，Maxim S.,Zhou，Jiajia. Atomic deciphering of cation exchange mechanism in upconversion nanoparticles[J]. JOURNAL OF LUMINESCENCE,2020,224.
APA	Guan，Ming,Molokeev，Maxim S.,&Zhou，Jiajia.(2020).Atomic deciphering of cation exchange mechanism in upconversion nanoparticles.JOURNAL OF LUMINESCENCE,224.
MLA	Guan，Ming,et al."Atomic deciphering of cation exchange mechanism in upconversion nanoparticles".JOURNAL OF LUMINESCENCE 224(2020).