Flux growth of honeycomb-like β-NaYF4:Yb3+, Er3+/Tm3+ crystals with multicolor upconversion luminescence

被引：18

作者：

Ding, Mingye ^{[1
]}

Huang, Wenjuan ^{[1
]}

Cao, Linhai ^{[1
]}

Lu, Chunhua ^{[1
]}

Song, Jianbin ^{[1
]}

Ni, Yaru ^{[1
]}

Xu, Zhongzi ^{[1
]}

机构：

[1] Nanjing Univ Technol, Coll Mat Sci & Engn, State Key Lab Mat Orient Chem Engn, Nanjing 210009, Peoples R China

来源：

MATERIALS LETTERS | 2012年 / 86卷

关键词：

Flux cooling method; Fluorides; Optical materials; Upconversion; NAYF4/LN LN; SOLID-STATE; NAYF4-YB; ER; FLUORESCENCE; NANOCRYSTALS; LAYERS; GREEN; SIZE; YB;

D O I：

10.1016/j.matlet.2012.07.031

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Highly crystalline NaYF4:Ln(3+) (Ln=Yb, Er, Tm) crystals with honeycomb structure were successfully synthesized for the first time by using a mixed NaCl-KCl flux cooling method at a holding temperature of 800 degrees C for 2 h in air. The results indicated that the crystals of NaYF4:Ln(3+) belonged to hexagonal system and three-dimensional open pores had an average diameter of 1 mu m interconnected with each other. Upon 980 nm laser diode excitation, yellow green and sky blue upconversion fluorescences of beta-NaYF4:20%Yb3+, 2%Er3+ crystals and beta-NaYF4:20%Yb3+, 0.5%Tm3+ crystals, which was caused by two- or three-photon upconversion processes, was observed clearly. (C) 2012 Elsevier B.V. All rights reserved.

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页码：58 / 61

页数：4

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