新型白光LED荧光粉Y2O3:Ti 3+的光谱性能

J4 ›› 2010, Vol. 27 ›› Issue (6): 655-660.

新型白光LED荧光粉Y₂O₃:Ti ³⁺的光谱性能

曾贵平¹,姚李¹,董强¹,邓赞红²,鲍巍涛¹

1 合肥学院，安徽合肥 230601；
2 中科院安徽光学精密机械研究所，安徽合肥 230031

收稿日期:2009-06-30 修回日期:2010-06-24 出版日期:2010-11-28 发布日期:2010-11-19
通讯作者: 曾贵平(1968-)，男，湖北人，博士，主要从事激光等光电子材料的研究。 E-mail:zgp2100@hfuu.edu.cn

Spectroscopic properties of new phosphor Y₂O₃:Ti ³⁺ for white LEDs

ZENG Gui-ping¹, YAO Li¹, DONG Qiang¹, Deng Zan-hong², Bao Wei-tao¹

1 Hefei University, Hefei 230601, China;
2 Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China

Received:2009-06-30 Revised:2010-06-24 Published:2010-11-28 Online:2010-11-19

摘要/Abstract

摘要：

采用共沉淀法，在不同的烧结气氛下制备了Y₂O₃:Ti ³⁺粉体，测量了它们的激发、发射光谱以及XRD光谱，观测了形貌。在紫外光激发下，微晶Y₂O₃:Ti ³⁺在439nm附近有较强的发射带，而纳米Y₂O₃:Ti ³⁺在400~500nm范围内出现了强的发射带。随纳米粉体的晶粒尺寸减小，它的发光明显增强，覆盖了整个可见光区。结果表明Y₂O₃:Ti ³⁺纳米粉体有望成为新一代白光LED或汞灯的光转换荧光粉。

关键词: 材料, 纳米粉体, 白光LED, 荧光粉

Abstract:

Y₂O₃:Ti ³⁺powders were prepared by coprecipitation method at different temperatures in different sintering atmospheres. XRD spectra, excitation and emission spectra of Y₂O₃:Ti ³⁺powders were measured, and their morphologies were observed. Under the excitation of UV light, Y₂O₃:Ti ³⁺ microcrystalline has a strong emission band near 439nm, and Y₂O₃:Ti ³⁺ nanocrystalline has a more stronger emission band in the range of 400-500nm. The fluorescence of Y₂O₃:Ti ³⁺ nanopowder becomes strong observably as the grain size reduces, and the fluorescence covers whole visible light region. This indicates that Y₂O₃:Ti ³⁺ nanopowder is expected to become a new generation light conversion phosphor for white LED or mercury lamp.

Key words: materials, nanopowder, white LED, phosphor, Y₂O³Ti ³⁺

中图分类号:

O433

曾贵平姚李董强邓赞红鲍巍涛. 新型白光LED荧光粉Y₂O₃:Ti ³⁺的光谱性能[J]. J4, 2010, 27(6): 655-660.

ZENG Gui-ping, YAO Li, DONG Qiang, Deng Zan-hong, Bao Wei-tao. Spectroscopic properties of new phosphor Y₂O₃:Ti ³⁺ for white LEDs[J]. J4, 2010, 27(6): 655-660.

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新型白光LED荧光粉Y₂O₃:Ti ³⁺的光谱性能

Spectroscopic properties of new phosphor Y₂O₃:Ti ³⁺ for white LEDs

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