Microwave hydrothermal synthesis and upconversion properties of NaYF4:Yb3+, Tm3+ with microtube morphology

被引：52

作者：

Chen, Xun ^{[1
]}

Wang, Wanjun ^{[1
]}

Chen, Xueyuan ^{[2
]}

Bi, Jinhong ^{[1
]}

Wu, Ling ^{[1
,2
]}

Li, Zhaohui ^{[1
]}

Fu, Xianzhi ^{[1
]}

机构：

[1] Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Breeding Base Photocatalysis, Fuzhou 350002, Peoples R China

[2] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Peoples R China

来源：

MATERIALS LETTERS | 2009年 / 63卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Luminescence; Optical materials and properties; Microwave; Upconversion; NANOPARTICLES; SOLIDS; GREEN; BLUE;

D O I：

10.1016/j.matlet.2009.01.075

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Efficient upconversion Yb3+ and Tm3+, codoped beta-NaYF4 is firstly synthesized via a novel and rapid microwave hydrothermal process. The as-prepared sample is characterized by X-ray diffraction (XRD). scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The sample shows a microtube morphology, which may be formed by the curliness of flakes. It is found that NaYF4:Yb3+, Tm3+ microtubes can be synthesized using microwave hydrothermal method in a much shorter reaction time compared with conventional hydrothermal method, and the upconversion fluorescent intensity is also greatly enhanced under 976 nm laser excitation. The energy transfer upconversion mechanisms and the possible reason for the enhancement of the fluorescent intensity are also proposed. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1023 / 1026

页数：4

共 11 条

[1] Upconversion and anti-stokes processes with f and d ions in solids [J].