Self-assembled 3D flower-shaped NaY(WO4)2:Eu3+ microarchitectures: Microwave-assisted hydrothermal synthesis, growth mechanism and luminescent properties

被引：173

作者：

Tian, Yue ^{[1
,2
]}

Chen, Baojiu ^{[1
]}

Hua, Ruinian ^{[2
]}

Yu, Naisen ^{[3
]}

Liu, Baoquan ^{[2
]}

Sun, Jiashi ^{[1
]}

Cheng, Lihong ^{[1
]}

Zhong, Haiyang ^{[1
]}

Li, Xiangping ^{[1
]}

Zhang, Jinsu ^{[1
]}

Tian, Bining ^{[1
,2
]}

Zhong, Hua ^{[1
]}

机构：

[1] Dalian Maritime Univ, Dept Phys, Dalian 116026, Liaoning, Peoples R China

[2] Dalian Nationalities Univ, Coll Life Sci, Dalian 116600, Liaoning, Peoples R China

[3] Dalian Nationalities Univ, Coll Phys & Mat Engn, Dalian 116600, Liaoning, Peoples R China

来源：

CRYSTENGCOMM | 2012年 / 14卷 / 05期

基金：

中国国家自然科学基金;

关键词：

ENERGY-TRANSFER; DOPED NAY(WO4)(2); LASER OPERATION; CONTINUOUS-WAVE; EU3+; NANOSTRUCTURES; INTENSITIES; PHOSPHORS; CRYSTALS; STATE;

D O I：

10.1039/c1ce06232h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Three dimensional (3D) flower-shaped microarchitectures of NaY(WO4)(2) were synthesized via a microwave-assisted hydrothermal process in the presence of trisodium citrate (Na(3)Cit) and a post-calcination process. The effects of reaction conditions on the morphology of precursor microstructures were studied. It was found that Na(3)Cit, as the chelating agent and shape modifier, plays a key role in the microstructure growth. A possible growth mechanism for the flower-shaped microarchitectures was proposed. The as-formed precursor can completely transform into NaY(WO4)(2) with its original flower-shaped morphology via a heat treatment process. The concentration and temperature quenching behaviors of Eu3+ fluorescence in the flower-shaped NaY(WO4)(2) were studied, and the optimal doping concentration was confirmed, meanwhile the activation energy was obtained. Judd-Ofelt parameters Omega(lambda) (lambda - 2, 4 and 6) of Eu3+ in the flower-shaped NaY(WO4)(2) phosphor were obtained by using the emission spectrum of Eu3+, moreover the radiative transition properties were analyzed.

引用

页码：1760 / 1769

页数：10

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