Influence of TTAB on morphology and photoluminescence of GdVO4: Eu3+ powders in a wide pH range

被引：9

作者：

Yan, Yinglin ^{[1
,2
]}

Wang, Juan ^{[1
,2
]}

Lu, Zhengxin ^{[1
,3
]}

Ren, Bing ^{[1
,3
]}

Wang, Liangliang ^{[1
,2
]}

Xu, Yunhua ^{[1
,3
]}

机构：

[1] Xian Univ Architecture & Technol, Coll Mat & Mineral Resources, Xian 710055, Peoples R China

[2] Shaanxi Key Lab Nanomat & Technol, Xian 710055, Peoples R China

[3] Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Peoples R China

来源：

POWDER TECHNOLOGY | 2013年 / 249卷

基金：

中国国家自然科学基金;

关键词：

GdVO4; Hydrothermal synthesis; Photoluminescence; Rare earth ions; HYDROTHERMAL SYNTHESIS; LUMINESCENT PROPERTIES; PHOSPHORS; PERFORMANCE; EMISSION; NANORODS;

D O I：

10.1016/j.powtec.2013.09.009

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

We demonstrate that the critical issue of controllable growth of GdVO4:Eu3+ crystal particles is solved by "tetradecyltrimethyl ammonium bromide (TTAB)" in a variable pH range. The microstructure, morphology, and luminescence property of the phosphors were investigated by X-ray powder diffraction (XRD), scanning electronic microscopy (SEM), transmission electron microscopy (TEM), and photoluminescence spectroscopy (PL). The results suggested that the surfactant TTAB was a key factor for determining the morphology of final GdVO4:Eu3+ crystals. The influence of pH on the nucleation rate was studied as well. The PL results indicated that the PL property of the GdVO4:Eu3+ phosphors was crucially impacted by the micro-structure and morphology. All the phosphors mainly showed strong red emissions at 615 and 618 nm originating from the hypersensitive transition D-5(0) -> F-7(2) of Eu3+ ions. The nano-sized phosphors showed prominent PL properties due to the grain size effect The crystalline state and the microstructure of the products also affected the PL performance. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：475 / 481

页数：7

共 31 条

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