Ca2Al3O6F:Eu2+: a green-emitting oxyfluoride phosphor for white light-emitting diodes

被引：275

作者：

Xia, Zhiguo ^{[1
]}

Liu, Ru-Shi ^{[2
]}

Huang, Kuan-Wei ^{[2
]}

Drozd, Vadym ^{[2
,3
]}

机构：

[1] China Univ Geosci, Sch Mat Sci & Technol, Beijing 100083, Peoples R China

[2] Natl Taiwan Univ, Dept Chem, Taipei 10617, Taiwan

[3] Florida Int Univ, Ctr Study Matter Extreme Condit, Miami, FL 33199 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2012年 / 22卷 / 30期

关键词：

ENERGY-TRANSFER; LUMINESCENCE; EFFICIENT; PHOTOLUMINESCENCE; EU-2+; IONS; EU; CA; LN;

D O I：

10.1039/c2jm32733c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel green-emitting phosphor Ca2Al3O6F:Eu2+ was synthesized and its photoluminescence (PL) properties were investigated for application in white light-emitting diodes (w-LEDs). This phosphor shows good absorption ranging from the ultraviolet to the blue region and a broad green emission band centered at 502 nm. The concentration quenching mechanism and fluorescence lifetime of Eu2+ emission in the Ca2Al3O6F:Eu2+ phosphors have been investigated. The key parameters for the fabrication of w-LED lamps, such as the temperature-dependent photoluminescence, microstructure and morphology, CIE value and quantum efficiency of Ca2Al3O6F:Eu2+ phosphors, have also been studied. The above results indicate that Ca2Al3O6F:Eu2+ is a good candidate as a green component for near UV-excited w-LEDs.

引用

页码：15183 / 15189

页数：7

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