Synthesis and luminescence properties of novel deep red emitting phosphors Li2MgGeO4:Mn4+

被引：21

作者：

Cao, Renping ^{[1
]}

Ceng, Dong ^{[1
]}

Yu, Xiaoguang ^{[1
]}

Guo, Siling ^{[1
]}

Wen, Yufeng ^{[1
]}

Zheng, Guotai ^{[1
]}

机构：

[1] Jinggangshan Univ, Coll Math & Phys, Jian 343009, Jiangxi, Peoples R China

来源：

FUNCTIONAL MATERIALS LETTERS | 2015年 / 8卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Mn4+ ion; red phosphor; luminescence; solid state reaction; NITRIDE PHOSPHORS; CRYSTAL-FIELD; MN4+; EMISSION;

D O I：

10.1142/S1793604715500460

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Novel deep red phosphor Li2MgGeO4:Mn4+ is synthesized by high temperature solid state reaction method in air. The strongest PL band peaking at similar to 671 nm in the range of 600-750 nm is due to the E-2 -> (4)A(2) transition of Mn4+ ion and the PLE spectra shows broad band peaking at similar to 323 within the range 220-550 nm owing to the (4)A(2) -> T-4(1) transitions of Mn4+ ion. The optimum Mn4+ doping concentration is about 0.4 mol.%. The luminous mechanism is explained by Tanabe-Sugano diagram of Mn4+ ion. The results indicate that red phosphor Li2MgGeO4:Mn4+ is a beneficial phosphor for use in white light-emitting-diodes (LEDs).

引用

页数：4

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