Efficient red up-conversion emission from Er3+ - Yb3+ co-doped rubidium lead iodide perovskite nanowires with surface plasmons

被引：6

作者：

Arumugam, Gowri Manohari ^{[1
]}

Xu, Chunxiang ^{[1
]}

Karunakaran, Santhosh Kumar ^{[2
]}

Shi, Zengliang ^{[1
]}

Can Zhu ^{[1
]}

Ming Wei ^{[1
]}

Qin Feifei ^{[1
]}

机构：

[1] Southeast Univ, Sch Biol Sci & Med Engn, State Key Lab Bioelect, Nanjing 210096, Jiangsu, Peoples R China

[2] Southeast Univ, Sch Elect Sci & Engn, Joint Int Res Lab Informat Display & Visualizat, Nanjing 210096, Jiangsu, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2018年 / 112卷 / 05期

基金：

中国国家自然科学基金;

关键词：

IN-VIVO; LUMINESCENCE; NANOPARTICLES; NANOCRYSTALS; ABSORPTION;

D O I：

10.1063/1.5008644

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Up-conversion nanostructures play a vital role in the application of bioimaging, but improving their red up-conversion emission is still a challenging issue. In this regard, an up-conversion system of RbPbI3:Er3+, Yb3+ nanowires with surface plasmons has been employed for improving the red up-conversion emission. It represents the dominant red emission at 652 nm and moderate green emission at 548 nm with a R/G ratio of 1.068. When introducing the oleate complex as a surface ligand in the formation of RbPbI3:Er3+, Yb3+ nanowires, the red emission becomes more dominant which is 8 times greater than that without the surface ligand. The decoration of Au NPs as surface plasmons on the surface of the up-conversion system greatly enhances the red emission as well as lifetime with a R/G ratio of 26:1 based on the local field enhancement effect, and the value is higher than that of previously reported values. Hence, the proposed up-conversion system can cause a dramatic change in the field of bioimaging. Published by AIP Publishing.

引用

页数：5

共 23 条

[1] Lanthanide-doped NaScF4 nanoprobes: crystal structure, optical spectroscopy and biodetection [J].