| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5397826 | Journal of Luminescence | 2017 | 4 Pages |
Abstract
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 1.6Â 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.
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Qinglin Sai, Changtai Xia,