Comprehensive studies of the Li+ effect on NaYF4: Yb/Er nanocrystals: morphology, structure, and upconversion luminescence

被引：43

作者：

Wang, Xiuwen ^{[1
,2
]}

Zhang, Xi ^{[1
,2
]}

Wang, Yangbo ^{[1
,2
]}

Li, Hongyu ^{[1
,2
]}

Xie, Juan ^{[3
,4
]}

Wei, Tian ^{[1
,2
]}

Huang, Qianwen ^{[1
,2
]}

Xie, Xiaoji ^{[1
,2
]}

Huang, Ling ^{[1
,2
]}

Huang, Wei ^{[1
,2
,3
,4
]}

机构：

[1] Nanjing Tech Univ NanjingTech, Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, KLOFE, 30 South Puzhu Rd, Nanjing 211816, Jiangsu, Peoples R China

[2] Nanjing Tech Univ NanjingTech, Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, IAM, 30 South Puzhu Rd, Nanjing 211816, Jiangsu, Peoples R China

[3] Nanjing Univ Posts & Telecommun, Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, Key Lab Organ Elect & Informat Displays, 9 Wenyuan Rd, Nanjing 210023, Jiangsu, Peoples R China

[4] Nanjing Univ Posts & Telecommun, Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, IAM, 9 Wenyuan Rd, Nanjing 210023, Jiangsu, Peoples R China

来源：

DALTON TRANSACTIONS | 2017年 / 46卷 / 28期

基金：

中国国家自然科学基金;

关键词：

NANOPARTICLES; ENHANCEMENT; PHASE; PHOTOLUMINESCENCE; EMISSION; IONS;

D O I：

10.1039/c7dt01820g

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Impurity doping plays a critical role in altering the properties of target nanomaterials in terms of designed morphologies, crystal structures, and functionalities. In this work, we have performed a comprehensive investigation of the effect of Li+ doping on the morphology, crystal structure, and upconversion luminescence of NaYF4:Yb/Er nanocrystals. Different Li+ sources, e.g., LiOA and LiOH, were used and the Li+ doping concentration varied from 0 to 100 mol%. The final product changes from hexagonal NaYF4:Yb/Er to the mixture of cubic NaYF4:Yb/Er and tetragonal LiYF4:Yb/Er, and finally to pure tetragonal LiYF4:Yb/Er. More importantly, at an ultra-low concentration of 0.5 mol% Li+ doping, as high as 34 times green and 101 times red emission enhancements are achieved.

引用

页码：8968 / 8974

页数：7

共 46 条

[1] Structural and spectroscopic characterization of active sites in a family of light-emitting sodium lanthanide tetrafluorides [J].