Color point tuning of Y3Al5O12:Ce3+ phosphor via Mn2+-Si4+ incorporation for white light generation

被引：145
作者：
Jia, Yongchao [1 ,2 ]
Huang, Yeju [3 ]
Zheng, Yuhua [1 ,2 ]
Guo, Ning [1 ,2 ]
Qiao, Hui [1 ,2 ]
Zhao, Qi [1 ,2 ]
Lv, Wenzhen [1 ,2 ]
You, Hongpeng [1 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
[3] SW Univ Sci & Technol, Sch Natl Def Sci & Technol, Chengdu, Sichuan, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY | 2012年 / 22卷 / 30期
基金：
中国国家自然科学基金;
关键词：
EMITTING PHOSPHOR; CRYSTAL-CHEMISTRY; ENERGY-TRANSFER; LUMINESCENCE; CE3+;
D O I：
10.1039/c2jm32233a
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：
In this paper, the color point tuning of Y3Al5O12 : Ce3+ phosphor has been realized by the incorporation of Mn2+-Si4+. The Mn2+ ions occupy the dodecahedral crystallographic Y3+ site, while the Si4+ ions substitute the tetrahedral Al3+ crystallographic site in the obtained powder. Under 450 nm excitation, the YAG : Ce3+, Mn2+, Si4+ samples exhibit the typical yellowish-green emission band of the Ce3+ ions, as well as an orange emission band of the Mn2+ ions. Furthermore, the intensity ratio of the orange/yellowish-green band can be enhanced through the increase of Mn2+-Si4+ content. The intense orange emission band of the Mn2+ ions is attributed to the effective energy transfer from the Ce3+ to Mn2+ ions, which has been justified through the luminescence spectra and the fluorescence decay dynamics. The related mechanism was demonstrated to be the electric dipole-quadrupole interaction based on the Inokuti-Hirayama theoretical model, and critical distance is calculated to be 8.6 angstrom by the spectral overlap method.
引用
收藏
页码：15146 / 15152
页数：7
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