| 烧结温度对硼硅基质荧光玻璃发光性能影响 |
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| 引用本文： | 李 杨,胡丽丽,杨波波,石明明,邹 军.烧结温度对硼硅基质荧光玻璃发光性能影响[J].无机材料学报,2017,32(3):257-262. |
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| 作者姓名： | 李 杨 胡丽丽 杨波波 石明明 邹 军 |
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| 作者单位： | (1. 中国科学院 上海光学精密机械研究所 高功率激光单元技术研发中心, 上海 201800; 2. 中国科学院大学, 北京 100049; 3. 上海应用技术大学 材料科学与工程学院, 上海201418; 4. 上海应用技术大学 理学院, 上海 201418) |
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| 基金项目： | 国家自然基金青年基金(51302171);上海市科委学科能力建设项目(14500503300);上海联盟计划项目(LM201547);National Natural Science Foundation of China (51302171);Science and Technology Commission of Shanghai Municipality (14500503300);Shanghai Municipal Alliance Program (LM201547) |
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| 摘 要： | 采用共烧结法制备了硼硅基质Ce: YAG荧光玻璃,研究了烧结温度在600℃~900℃范围内, Ce: YAG荧光玻璃的发光强度变化和色坐标漂移规律。结果表明, 随着烧结温度的升高, Ce: YAG荧光玻璃发光强度先增强后减弱, 700℃烧结时, 荧光玻璃获得最大发光强度; 超过850℃烧结时, 荧光玻璃无发光性能; 同时, 色坐标(x, y)发生漂移, 且比相同烧结温度的荧光粉漂移幅度大。通过X射线粉末衍射仪、差示扫描量热分析仪和X射线光电子能谱分析仪测试分析表明: 随着烧结温度升高, 荧光粉中的Ce3+被玻璃基质氧化成Ce4+, 玻璃液体腐蚀破坏了荧光粉YAG晶体结构, 降低了荧光玻璃的发光强度, 从而导致色坐标劣化漂移。
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| 关 键 词： | Ce: YAG荧光玻璃 发光强度 色坐标漂移 烧结温度 |
| 收稿时间： | 2016-06-15 |
| 修稿时间： | 2016-09-06 |
Effect of Sintering Temperature on Luminescence Properties of Color Conversion Glasses in Borosilicate Glasses |
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| LI Yang,HU Li-Li,YANG Bo-Bo,SHI Ming-Ming,ZOU Jun.Effect of Sintering Temperature on Luminescence Properties of Color Conversion Glasses in Borosilicate Glasses[J].Journal of Inorganic Materials,2017,32(3):257-262. |
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| Authors: | LI Yang HU Li-Li YANG Bo-Bo SHI Ming-Ming ZOU Jun |
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| Affiliation: | (1. Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; 2. University of Chinese Academy of Sciences, Beijing 100049, China; 3. School of Material Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China; 4. School of Science, Shanghai Institute of Technology, Shanghai 201418, China) |
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| Abstract: | The color conversion glass is a promising material for light emitting diodes encapsulation due to its high thermal conductivity and good thermal stability. In present study, color conversion glasses were prepared by sintering a mixture of borosilicate glass frits and a YAG phosphor at temperature from 600℃ to 900℃. The effects of sintering temperature on luminescence properties were examined. Characteristics of color conversion glasses, with respect to luminescence intensity, CIE (Commission International de I’Eclairage) chromaticity and CCT (Correlated Color Temperature) were analyzed based on luminescence excitation and emission spectra. These characteristics are dependent on sintering temperature of the color conversion glasses. The CIE coordinates shift with increase of sintering temperature. The glass, sintered at 700℃, shows the best luminescence properties. But for the glasses sintered above 850℃, their luminescence properties may be destroyed. Test results of X-ray diffraction (XRD), differential scanning calorimetry (DSC) and X-ray photoelectron spectroscopy (XPS) reveal that degradation of luminescence properties with increase of sintering temperature is ascribed to the lattice disturbance of YAG and oxidation of Ce3+, which is caused by reactions between glass matrix and YAG phosphors. The present study may promote the application of color conversion glasses in light emitting diodes encapsulation. |
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| Keywords: | Ce: YAG color conversion glass luminescence intensity CIE coordinates shift sintering temperature |
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