Hydrothermal preparation and luminescence properties of Ca9Y(PO4)7:Eu2+, Mn2+ nanocrystals

被引：11

作者：

Zhang, Huiling ^{[1
]}

Yu, Xiaofang ^{[1
]}

Sun, Haiying ^{[1
]}

Mi, Xiaoyun ^{[1
]}

Zhou, Hongyan ^{[1
]}

Zhang, Xiyan ^{[1
]}

Bai, Zhaohui ^{[1
]}

机构：

[1] Changchun Univ Sci & Technol, Sch Mat Sci & Engn, Changchun 130022, Jilin, Peoples R China

来源：

JOURNAL OF CRYSTAL GROWTH | 2019年 / 522卷

基金：

中国国家自然科学基金;

关键词：

Crystal structure; Hydrothermal crystal growth; Phosphates; Phosphors; RED-EMITTING PHOSPHOR; ENERGY-TRANSFER; PHOTOLUMINESCENCE; TB3+; EU2+; BI;

D O I：

10.1016/j.jcrysgro.2019.06.001

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

A series of emission-tunable Ca9Y(PO4)(7):Eu2+, Mn2+ nanophosphors were synthesized by the hydrothermal method. X-ray diffraction (XRD), photoluminescence (PL), Rietveld refinement and transmission electron microscopy (TEM) were used to characterize the samples. The results showed that the pH value played a key role in determining the morphology of nanophosphors. With the increase of pH values in the initial solution, the morphologies of samples changed from rod-shapes to ball-shapes. And the decrease of aspect ratios accompanies a change in luminescence properties. The energy transfer from Eu2+ to Mn2+ in Ca9Y(PO4)(7) was achieved due to the electric multipolar interaction of the electric dipole-quadrupole mechanism, and the critical distance (R-c) between them was calculated by the concentration quenching method.

引用

页码：61 / 67

页数：7

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