Synthesis and enhancement of red UC luminescence properties of ordered hexagonal NaYF4:Yb3+/Er3+ nanowire arrays

被引：7
作者：
Wang, Zhijun [1 ,2 ]
Lu, Zibiao [1 ]
Ruan, Dongcheng [1 ]
Tao, Feng [1 ,2 ]
Liu, Qi [1 ,2 ]
Wang, Hai [1 ]
Sun, Yufeng [1 ,2 ]
机构：
[1] Anhui Polytech Univ, Dept Mat Sci & Engn, Wuhu 241000, Anhui, Peoples R China
[2] Anhui Prov Lab High Performance Nonferrous Met Ma, Wuhu 241000, Anhui, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2014年 / 320卷
基金：
中国国家自然科学基金; 安徽省自然科学基金;
关键词：
Nanowire arrays; NaYF4:Yb3+/Er3+; Hydrothermal synthesis; Upconversion; UP-CONVERSION LUMINESCENCE; FLUORIDE NANOTUBE ARRAYS; POROUS ALUMINA TEMPLATE; PHASE; NANOPARTICLES; NANOCRYSTALS; ZNO; FLUORESCENCE; FABRICATION; GROWTH;
D O I：
10.1016/j.apsusc.2014.09.162
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Hexagonal NaYF4:Yb3+/Er3+ nanowire arrays were successfully synthesized via a hydrothermal method assisted by AA0 template. X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and selected area electron diffraction (SAED) have been used to study the morphologies and crystal structures of the products. The formation of NaYF4:Yb3+/Er3+ nanowire arrays was investigated in detail, and one possible mechanism was proposed. The hexagonal NaYF4:Yb3+/Er3+ nanowire arrays show characteristic upconversion fluorescence at green( 520-570 nm) and red (630-680 nm) corresponding to the 4f-4f transition of Er3+. Compared with the hexagonal NaYF4:Yb3+/Er3+ microprisms, the intensity of the red light is obviously improved due to size-dependent nonradiative relaxation. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：742 / 745
页数：4
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