Synthesis and upconversion luminescent properties of BaMgF4 : Er3+, Yb3+ nanocrystals

被引：3

作者：

Pan Cheng-Long ^{[1
]}

Liu Hong-Li ^{[1
]}

Guo Yun ^{[1
]}

Jing Shu ^{[1
]}

Sun Jing ^{[1
]}

Zhou He-Feng ^{[1
]}

Wang Hua ^{[1
]}

机构：

[1] Taiyuan Univ Technol, Key Lab Interface Sci & Engn, Minist Educ, Taiyuan 030024, Peoples R China

来源：

ACTA PHYSICA SINICA | 2014年 / 63卷 / 15期

基金：

中国国家自然科学基金;

关键词：

BaMgF4; Er3+; Yb3+; reverse co-precipitation; upconversion; PHASE; SIZE;

D O I：

10.7498/aps.63.154211

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

BaMgF4 : Er3+, Yb3+ nanocrystals in rod-shape are synthesized by means of the reverse co-precipitation. They emit green and red light under excitation of near-infrared light (980 nm). The green and red emissions may be attributed to the H-2(11/2)-I-4(15/2), S-4(3/2)-I-4(15/2) and F-4(9/2)-I-4(15/2) transitions of Er3+. Dopant ions Yb3+ as sensibilizers can improve the upconversion transformation efficiency. The emission intensity is the strongest when the contents of Er3+ and Yb3+ are 3% and 10%, respectively. With increasing concentration of Yb3+, the red emission intensity increases while the green emission reduces. And the conversion fitting curve between the luminous intensity and pump current indicates that the upconversion process of the green and red light of BaMgF4 : Er3+, Yb3+ is due to two-photon absorption.

引用

页数：5

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