无机材料学报 ›› 2015, Vol. 30 ›› Issue (6): 588-592.DOI: 10.15541/jim20140570

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LED用荧光玻璃的制备及性能研究

张 延1, 刘 升1, 许虹杰2, 王连军1, 江 莞1   

  1. (1. 东华大学 材料科学与工程学院, 纤维材料改性国家重点实验室, 上海 201620 2. 上海柯瑞冶金炉料有限公司, 上海 201908)
  • 收稿日期:2014-11-10 修回日期:2015-02-09 出版日期:2015-06-04 网络出版日期:2015-05-22
  • 作者简介:张 延(1989–), 男, 硕士研究生. E-mail: zy_hjh@live.com
  • 基金资助:
    国家自然科学基金(11179028, 51432004);上海市优秀技术带头人计划(15XD1525100)

Preparation and Performance of Ce:YAG Phosphor-in-glass

ZHANG Yan1, LIU Sheng1, XU Hong-Jie2, WANG Lian-Jun1, JIANG Wan1   

  1. (1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China; 2. Shanghai Career Metallurgy Furnace Material Co., Ktd., Shanghai 201908, China)
  • Received:2014-11-10 Revised:2015-02-09 Published:2015-06-04 Online:2015-05-22
  • About author:ZHANG Yan. E-mail: zy_hjh@live.com
  • Supported by:
    National Natural Science Foundation of China (11179028, 51432004);Program of Shanghai Subject Chief Scientist (15XD1525100)

摘要:

以行星球磨得到的SiO2粉体和商用Ce:YAG荧光粉为原料, 采用放电等离子体烧结技术(简称SPS)成功制备块体荧光玻璃。利用XRD、SEM、紫外/可见光分光光度计和荧光光谱仪等研究了Ce:YAG荧光玻璃的物相、显微结构、吸收和发光性能等。研究结果表明: SPS烧结制备的块体荧光玻璃样品主体是非晶相, 同时荧光粉颗粒在玻璃基质中均匀分布, 颗粒大小也未发生变化, 这表明荧光粉晶体在SPS烧结过程中没有发生化学分解反应, 在玻璃基体中得到很好地保存。该荧光玻璃吸收峰在460 nm左右, 发射波长在530 nm左右。通过对不同含量荧光粉的荧光玻璃进行发光性能表征, 发现荧光粉含量为3wt%的荧光玻璃性能最佳, 以此封装的白光LED样品在800 mA电流驱动下, 获得白光输出, 色坐标为(0.33, 0.38)。

关键词: 白光LED, Ce:YAG, 荧光玻璃, 放电等离子体烧结

Abstract:

One-step spark plasma sintering (SPS) process was introduced to fabricate Ce:YAG phosphor-in-silica-glass (PiSG), of which the composite powder of glass powder/commercial Ce:YAG phosphor was directly obtained by ball mill grinding. The phase, microstructures, absorption spectrum and photoluminescence properties of PiSG samples were investigated by XRD, SEM, UV-Vis spectrophotometer, fluorescence spectrophotometer, etc. The results showed that the as-sintered PiSG sample had amorphous phase and the Ce:YAG phosphor particles was uniformly distributed in glass matrix with no size change, indicating that Ce:YAG phosphor particles were well preserved in silica glass matrix without any decomposition reaction. There was a strong absorption peak around 460 nm and a broad emission band peaked at 530 nm of PiSG sample. The properties of PiSG samples were studied by adjusting the phosphor concentration, demonstrating that the photoluminescence intensity reached the highest when Ce:YAG phosphor concentration was 3wt%. Besides, the optimized 3wt% PiSG based LED modules fell into white light range(0.33, 0.38) under 800 mA current drive.

Key words: white LED, Ce:YAG, phosphor-in-glass, spark plasma sintering

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