YAG∶Ce Phosphors for WLED via Nano-Pesudoboehmite Sol-Gel Route  

作　　者：张纳 王达健 李岚 蒙延双 张晓松 明楠 

机构地区：[1]Institute of Materials Physics, Tianjin University of Technology, Tianjin 300191, China, School of Science, Tianjin Polytechnic University, Tianjin 300160, China [2]Institute of Materials Physics, Tianjin University of Technology, Tianjin 300191, China,Tianjin Key Laboratory for Photoelectric Materials and Devices, Tianjin 300191, China [3]Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093, China [4]Institute of Materials Physics, Tianjin University of Technology, Tianjin 300191, China

出　　处：《Journal of Rare Earths》2006年第3期294-297,共4页稀土学报（英文版）

基　　金：ProjectsupportedbytheNationalNaturalScienceFoundationofChina(50364002),NaturalScienceFoundationofTianjin(033601111,06YFJMJC02300)andNaturalScienceFoundationofTianjinUniversityofTechnology(Lg04032)

摘　　要：The sub-micron sized YAG ： Ce phosphors were synthesized via a modified sol-gel method by peptizing nano-pesudoboehmite particulate. It is found that YAG phase from the dried gel powders appears at 1000 ℃ then the pure YAG phase exists at a relatively lower sintering temperature of 1400 ℃. The smaller sizes of phosphors in the ranges of 1 - 3 μm are obtained due to the contribution of seeding effects of nano-sized alumina particles to strengthen each step of the processes. Both the excitation and emission spectra of photoluminescence of the phosphor obtained at 1400 ℃ meet well with the spectroscopic requirements of the WLED phosphors.The sub-micron sized YAG ： Ce phosphors were synthesized via a modified sol-gel method by peptizing nano-pesudoboehmite particulate. It is found that YAG phase from the dried gel powders appears at 1000 ℃ then the pure YAG phase exists at a relatively lower sintering temperature of 1400 ℃. The smaller sizes of phosphors in the ranges of 1 - 3 μm are obtained due to the contribution of seeding effects of nano-sized alumina particles to strengthen each step of the processes. Both the excitation and emission spectra of photoluminescence of the phosphor obtained at 1400 ℃ meet well with the spectroscopic requirements of the WLED phosphors.

关 键 词：PSEUDO-BOEHMITE sol-gel YAG ： Ce phosphor WLED rare earths 

分 类 号：TN312.8[电子电信—物理电子学]