外文题目: Tunable colorimetric performance of Al2O3-YAG:Ce3+ eutectic crystal by Ce3+ concentration
作者: Sai, Qinglin; Xia, Changtai
刊名: J. Lumines.
年: 2017 卷: 186 页： 68--71
英文关键词:
Ce-doped; Al2O3-YAG eutectic; Photoluminescence; White LED
DIRECTIONAL SOLIDIFICATION; LUMINESCENCE PROPERTIES; WHITE LEDS; COMPOSITE; PHOSPHOR; FABRICATION; CERAMICS; GROWTH; YAGCE; MICROSTRUCTURE
英文摘要:
Ce-doped Al2O3-YAG eutectics with different percentage of Ce were successfully grown by the optical floating zone technique. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to investigate the structure. The results show that they have typical eutectic structure of interpenetrating sapphire and garnet phases with the tens of microns lamella spacing. The photoluminescence spectra of the eutectics showed that they have wide excitation band, and samples with 1.6 mol% Ce-doped has the highest emission intensity. The eutectic-packaged LED has high luminous efficiency and its color can be modulated by changing Ce concentration. The results reveal that Ce-doped Al2O3-YAG eutectic is a promising phosphor for white LED applications. (C) 2017 Elsevier B.V. All rights reserved.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1016/j.jlumin.2017.02.011


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