材料科学与工程学报2012，Vol.30Issue(1)：45-49,5.
Ce-YAG微晶玻璃的制备及其发光性能
Fabrication and Luminescence Properties of Ce-YAG Glass-ceramics
姜斌 1张金朝 1宋鹂1
作者信息
- 1. 华东理工大学材料科学与工程学院,上海200237
- 折叠
摘要
Abstract
Ce3＋ doped Y2O3-Al2O3-SiO2 （SAY） glass was synthesized by high temperature solid-state melting method under weak reducing atmosphere, and yellow YAG glass-ceramic was obtained after being heat treated at 1250℃ 1300℃. By using X-ray diffractometry （XRD） and scanning electron microscopy （SEM）, we studied the crystalline phase structure of the glass-ceramic. The luminescence characteristics of Ce3＋ ion in different matrixes of glass and glass-ceramic samples were studied by the excitation and emission spectroscopy, and we also studied the influence of Al2O3/Y2 O3 on the luminescence properties. The results show that we can obtain the Ce-YAG glas-ceramics after heat treating the as-made glasses, and the grain size of the Ce-YAG phase is between 80-120nm with well-developed grains. The glass ceramics can emit yellow fluorescence centered at 530nm with a broad emission spectrum under the excitation at 450nm, which attributes to the energy transfer 5d-4f （2 F2/7 ） of the Ce^3＋ , and indicates that it has a great value in application and development in the field of LED lighting. The molar ratio of Al2O3/Y2O3 has a great effect on the luminescence properties of the as-made glass-ceramics. When the A12O3/Y2O3 equals to1.5, the sample has the excellent luminescent performance.关键词
YAG/发光/玻璃陶瓷/Ce3＋/白光LEDKey words
YAG/luminescence/glass-ceramic/Ce3 +/white LED分类
化学化工引用本文复制引用
姜斌,张金朝,宋鹂..Ce-YAG微晶玻璃的制备及其发光性能[J].材料科学与工程学报,2012,30(1):45-49,5.
