【摘要】 白光LED技术对于合理利用能源、缓解能源危机和绿色照明具有重要意义。文章综述了近年来用于高效蓝光LED激发形成白光的YAG∶Ce3+荧光粉合成工艺研究的新进展及国内外发展现状,对高温固相反应法、溶胶-凝胶法、喷雾热解法、共沉淀法等方法优缺点进行了综合比较,并探讨了YAG∶Ce3+荧光粉在应用方面有待于提高的地方。对影响荧光粉的发光效率和转换效率的后处理工艺、粒度分布、发光性能各种因素进行了分析,并对今后的发展研究趋势进行了展望。更多还原

【Abstract】 White LED offers a useful technology for appropriate utilization of energy, relieving energy crisis and green lighting. The synthesis process development and the recent research progress of YAG∶Ce³⁺phosphors for blue LED are summarized in this paper. High temperature solid-state method, sol-gel method, spray pyrolysis method, and co-precipitation method are compared and their advantages and disadvantages are pointed out. Some existing problems about the phosphor in applications are also discussed. The factors such as after-treatment craft, distribution of particle size, luminescent properties which effect luminescent efficiency and converted efficiency are analyzed. The prospects for synthesis methods and research tendency of YAG∶Ce³⁺ phosphors are given.更多还原