Tunable luminescence and energy transfer properties of Ca5(PO4)2SiO4:Ce3+/Tb3+/Mn2+ phosphors

被引：94

作者：

Geng, Dongling ^{[1
,2
]}

Shang, Mengmeng ^{[1
,2
]}

Zhang, Yang ^{[1
,2
]}

Lian, Hongzhou ^{[1
]}

Cheng, Ziyong ^{[1
]}

Lin, Jun ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Jilin, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2013年 / 1卷 / 12期

基金：

中国国家自然科学基金;

关键词：

LIGHT-EMITTING DIODE; SINGLE-PHASE; MN2+ PHOSPHORS; COLOR; GREEN; CE3+; TB3+; UV; DY3+; CA;

D O I：

10.1039/c3tc00039g

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A series of single-composition phosphors Ca-5(PO4)(2)SiO4:Ce3+, Tb3+, Mn2+ have been prepared via a high-temperature solid-state reaction process. The Ce3+ emission at different lattice sites has been identified and discussed. The energy transfer from Ce3+ to Tb3+ and Mn2+ ions has been validated. The emissive colors of Ca-5(PO4)(2)SiO4:Ce3+, Tb3+/Mn2+ samples can be adjusted from blue to green and from blue to red-orange by the energy transfer of Ce3+ -> Tb3+ and Ce3+ -> Mn2+, respectively. More importantly, white emission has been obtained through adjusting the relative concentrations of Ce3+, Tb3+ and Mn2+ ions in the Ca-5(PO4)(2)SiO4 host under UV and low-voltage electron beam excitation, respectively. Additionally, the temperature-dependent photoluminescence and the degradation behaviors of cathodoluminescence under continuous electron bombardment for as-prepared phosphors have been investigated in detail. The results reveal that the Ca-5(PO4)(2)SiO4 host is stable enough to protect the photoluminescence and cathodoluminescence properties of Ce3+, Tb3+ and Mn2+ ions from being affected. Tunable luminescence and the stable structure suggest that Ca-5(PO4)(2)SiO4:Ce3+/Tb3+/Mn2+ phosphors have great potential in the application in WLEDs and FEDs.

引用

页码：2345 / 2353

页数：9

共 51 条

[1]

[Anonymous], 86748 LAUR LOS AL NA

[2]

BLASSE G, 1969, PHILIPS RES REP, V24, P131

[3] Photoluminescent and Thermal Stable Properties of Tb3+-Doped Ca-α-SiAlON under VUV Excitation [J].