Novel white-light-emitting SiAlON-crystal/glass composite phosphor prepared by facile strategy for white light-emitting-diode

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• 作者：Zhi-yong Mao^a ; ^b ; Ying-chun Zhu^a ; ^{yzhu@mail.sic.ac.cn} ; Lin Gan^a ; Yi Zeng^a ; Fang-fang Xu^a ; Yang Wang^a ; Da-jian Wang^b ; ^{djwang@tjut.edu.cn}
• 关键词：Phosphors ; Luminescence ; Crystal/glass composition ; White LED
• 刊名：Materials Letters
• 出版年：2012
• 期刊代码：59_0167577x
• 类别：ms
• 出版时间：1 August, 2012
• 卷：80
• 期：Complete
• 页码：63-65
• 文件大小：516 K

摘要

Novel Eu²⁺ doped SiAlON-crystal/glass composite white-light-emitting phosphor applied in ultraviolet (UV) based white light-emitting-diode (LED) was prepared by a facile strategy instead of traditional recrystallization procedure. Blue-emitting glass phase was introduced in yellow-emitting 伪-SiAlON:Eu²⁺ micron-crystal phosphor by simple heat-treatment with the addition of nano-SiO₂ or B₂O₃. As a result, white-light emission with CIE chromaticity coordinates (0.31, 0.33) and (0.32, 0.37) was demonstrated by mixing blue and yellow light for B₂O₃ and SiO₂ induced crystal/glass composite phosphor, respectively. This variety of white-light-emitting phosphors in such a crystal/glass composite structure shows potential applications in UV white LED to be free of complicated multicomponent phosphor blending operation.