Tunable full-color-emitting La0.827Al11.9O19.09:Eu2+,Mn2+ phosphor for application to warm white-light-emitting diodes

被引：125

作者：

Won, Yu-Ho

Jang, Ho Seong

Im, Won Bin

Jeon, Duk Young ^{[1
]}

Lee, Jeong Soo

机构：

[1] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea

[2] LG Elect Inst Technol, LED R&D Lab, Seoul 137140, South Korea

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 23期

关键词：

D O I：

10.1063/1.2398887

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

La0.827Al11.9O19.09:Eu2+,Mn2+ showed three emission bands when excited by ultraviolet light. A blue emission originates from Eu2+, whereas both green and red emissions originate from Mn2+. The luminescent mechanism is explained invoking the energy transfer of Eu2+-> Mn2+ and Mn2+(tetrahedral site)-> Mn2+(octahedral site). This energy transfer was confirmed by faster decay times of the blue and green emissions as energy donors. The emitted color of La0.827Al11.9O19.09:Eu2+,Mn2+ can be easily tailored from blue to red through variations of the Mn2+ content. The white-light-emitting diode fabricated via a combination of an ultraviolet light-emitting diode (lambda(peak)=385 nm) with La0.827Al11.9O19.09:Eu2+,Mn2+ showed a warm white light (T-c=3559 K). (c) 2006 American Institute of Physics.

引用

页数：3

共 12 条

[1] MANGANESE-ACTIVATED LUMINESCENCE IN SRAL12O19 AND CAL12O19 [J].