摘要
文章介绍了小颗粒YAG:Ce荧光粉的三种合成方法。这种荧光粉受到蓝光LED发出的光线的激发会发出黄光。在合成的pcLEDs里,蓝光和黄光混合形成了白光。本文解释了这种涂有YAG:Ce荧光粉的pcLED的色点的依赖性以及通过添加修复晶格点阵的催化剂以改变这种依赖型的方法。另外,文章还讨论了Ce件聚集中心的YAG:Ce荧光粉的效率的测量、烧成温度、激发波长。
Three different synthetic routes to the production of small particle cerium activated yttrium aluminium garnet (YAG:Ce) phosphors are reported . These YAG. Ce phosphors emit yellow light when excited by blue emitting LEDs, with the resulting phosphor conversion LEDs (pcLEDs) generating ‘white’ light from the mixture of the yellow and blue. The dependence of the colour point of the pcLED emission on the loading of the YAG:Ce phosphor is explained. Methods of changing this by the addition of co-activators to modify the lattice composition are also reported. Efficiency measurements on these YAG: Ce phosphors as a function of Ce^3+ concentration, firing temperature and exciting wavelength are presented and discussed.
出处
《电子器件》
CAS
2008年第1期197-200,共4页
Chinese Journal of Electron Devices
基金
Acknowledgements We would like to thank the DTI for financial support for the Nanophosphor programme.