Role of flux in the production process of red phosphors for white LEDs

被引：0
|
作者：
Gwan-Hyoung Lee
Chulsoo Yoon
Shinhoo Kang
机构：
[1] Seoul National University,Department of Materials Science and Engineering
[2] Samsung Electro-Mechanics Co. Ltd.,undefined
来源：
Journal of Materials Science | 2008年 / 43卷
关键词：
Emission Intensity; B2O3; Luminescence Property; Boron Oxide; Surface Segregation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Eu3+-doped potassium tungstate phosphor was synthesized by solid-state reactions. The as-produced phosphor was re-fired with a small amount of flux-like alkali carbonates and boron oxide. It was confirmed that the re-firing process containing a flux led to the uniform particle growth with smooth surface and improved Eu3+ distribution at the surface of particles, resulting in the enhanced red emission. The X-ray diffractometer (XRD) and X-ray photoelectron spectroscopy (XPS) analyses were used to determine the role of flux in the system.
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页码：6109 / 6115
页数：6
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