Luminescent and thermal properties of full-color emitting X3MgSi2O8:Eu2+, Mn2+ (X = Ba, Sr, Ca) phosphors for white LED

被引：101

作者：

Kim, Jong Su ^{[1
]}

Kwon, Ae Kyung

Park, Yuri Hyung

Choi, Jin Chul

Park, Hong Lee

Kim, Gwang Chul

机构：

[1] Pukyong Natl Univ, Div Image Informat Sci & Engn, Pusan 608739, South Korea

[2] Yonsei Univ, Inst Phys & Appl Phys, Seoul 120749, South Korea

[3] Korea Univ Technol & Educ, Sch Liberal Arts, Cheonan 330708, South Korea

来源：

JOURNAL OF LUMINESCENCE | 2007年 / 122卷

关键词：

white-light-emitting diode; X3MgSi2O8 : Eu2+; Mn2+; crystal field strength; temperature dependence;

D O I：

10.1016/j.jlumin.2006.01.231

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The X3MgSi2O8:Eu2+, Mn2+ (X = Ba, Sr, Ca) phosphors show three emission peaks: the blue and green bands of Eu2+ transitions, and the red band of Mn2+ transitions. Three emission peaks are shifted toward longer-wave length side with substituting X cations with smaller cations in the order of Ba, Sr, and Ca cations. This behavior is discussed in terms of two factors of the crystal-field strength and the covalence. As an increase of temperature, the red and green emission peaks show anomalous blueshift along with broadening bandwidth and decreasing intensity. This phenomenon is described in terms of the phonon-assisted back tunneling from the excited state of low-energy emission band to the excited state of high-energy emission band. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：583 / 586

页数：4

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