Sr3GdNa(PO4)3F:Eu2+,Mn2+: a potential color tunable phosphor for white LEDs

被引：132

作者：

Jiao, Mengmeng ^{[1
,2
]}

Jia, Yongchao ^{[1
,2
]}

Lu, Wei ^{[1
]}

Lv, Wenzhen ^{[1
,2
]}

Zhao, Qi ^{[1
,2
]}

Shao, Baiqi ^{[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] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2014年 / 2卷 / 01期

基金：

中国国家自然科学基金;

关键词：

LIGHT-EMITTING-DIODES; ENERGY-TRANSFER; LUMINESCENT PROPERTIES; SINGLE-PHASE; MN2+; EMISSION; CE3+; PHOTOLUMINESCENCE; TEMPERATURE; EFFICIENCY;

D O I：

10.1039/c3tc31837k

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A series of Eu2+ and Mn2+ activated novel Sr3GdNa(PO4)(3)F phosphors have been prepared through a high temperature solid state reaction. The investigation revealed that Sr3GdNa(PO4)(3)F crystallized in a hexagonal crystal system with the space group P (3) over bar (no. 147). The Eu2+ activated phosphors can be efficiently excited in the range of 250 to 420 nm, which matches well with the commercial n-UV LED chips, and give intense blue emission centering at 470 nm. By codoping the Eu2+ and Mn2+ ions into the SGNPF host and singly varying the doping content of the Mn2+ ion, tunable colors from blue to white and then to yellow are obtained in SGNPF: Eu2+, Mn2+ phosphors under the irradiation of 390 nm. The energy transfer from the Eu2+ to Mn2+ ions is demonstrated to be a dipole-quadrupole mechanism in terms of the experimental results and analysis of photoluminescence spectra and decay curves of the phosphors. The critical distance between the Eu2+ and Mn2+ ions in SGNPF: Eu2+, Mn2+ was determined by the spectral overlap method. The investigation indicates that our prepared samples might have potential application in WLEDs.

引用

页码：90 / 97

页数：8