Preparation, Characterization, and Photoluminescence Properties of Tb3+-, Ce3+-, and Ce3+/Tb3+-Activated RE2Si4N6C (RE = Lu, Y, and Gd) Phosphors

被引：82

作者：

Duan, Chengjun ^{[1
]}

Zhang, Zhijun ^{[2
]}

Roesler, Sven ^{[1
]}

Roesler, Sylke ^{[1
]}

Delsing, Anneke ^{[3
]}

Zhao, Jingtai ^{[2
]}

Hintzen, H. T. ^{[3
]}

机构：

[1] Leuchtstoffwerk Breitungen GmbH, D-98597 Breitungen, Germany

[2] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Transparent Optofunct Inorgan Mat, Shanghai 200050, Peoples R China

[3] Eindhoven Univ Technol, NL-5600 MB Eindhoven, Netherlands

来源：

CHEMISTRY OF MATERIALS | 2011年 / 23卷 / 07期

关键词：

optical materials; characterization of materials; inorganic solids and ceramics; ENERGY-TRANSFER; CRYSTAL-STRUCTURE; RARE-EARTH; LUMINESCENT PROPERTIES; ELECTRONIC-STRUCTURE; EU2+; SR; BA; NITRIDOSILICATES; NITRIDES;

D O I：

10.1021/cm103495j

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：

Photoluminescence properties of Tb3+ and Ce3+ singly doped and Ce3+/Tb3+-codoped RE2Si4N6C (RE = Lu, Y, and Gd) phosphors were investigated. Tb3+ shows similar luminescence properties in RE2Si4N6C (RE = Lu, Y, and Gd) host lattices and emits bright green light under UV excitation around 300 nrn. The luminescence properties of Ce3+ in RE2Si4N6C host lattices are influenced by the size of the RE3+ ions (Lu2Si4N6C and Y2Si4N6C vs Gd2Si4N6C). Both Ce3+-activated Lu2Si4N6C and Y2Si4N6C phosphors exhibit a broad band emission in the wavelength range of 450-750 nm with peak center at about 540 am, while Ce3+-activated Gd2Si4N6C shows a broad emission band in the wavelength range of 500-800 nm with peak center at about 610 nm. This difference is ascribed to the different site occupations of Ce3+ on the two crystallographic sites in Gd2S4N6C as compared to the Y and Lu compounds. In Ce3+/Tb3+-codoped RE2Si4N6C (RE = Lu,Y, and Gd) phosphors, it is observed that energy transfer takes place from Ce3+ to Tb3+ in Ce3+/Tb3+-codoped Lu2Si4N6C and Y2Si4N6C but in the reversed direction from Tb3+ to Ce3+ in Ce3+/Tb3+-codoped Gd2Si4N6C, depending on the position of the 5d level of Ce3+ versus the 5D(4) level of Tb3+. The potential applications of these phosphors are pointed out.

引用

页码：1851 / 1861

页数：11

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