【摘 要】
：
采用共沉淀法制备出尺寸分布均匀、分散性良好的立方相钇铝石榴石(YAG)与Ce:YAG纳米粉体。考察了煅烧温度和时间对粉体物相和颗粒大小的影响及Ce3+的掺杂量对Ce:YAG粉体的荧
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采用共沉淀法制备出尺寸分布均匀、分散性良好的立方相钇铝石榴石(YAG)与Ce:YAG纳米粉体。考察了煅烧温度和时间对粉体物相和颗粒大小的影响及Ce3+的掺杂量对Ce:YAG粉体的荧光光谱的影响。借助IR、XRD、BET、SEM和荧光分析仪等测试手段对前驱体、YAG及Ce:YAG纳米粉体进行了表征与分析。结果表明:共沉淀前驱体经900℃煅烧2h后可得到纯立方相的YAG(Ce:YAG)纳米粉体;所得Ce:YAG粉体具有较好的荧光特性且Ce3+的掺杂量增加会造成其荧光光谱红移。
The cubic phase yttrium aluminum garnet (YAG) and Ce: YAG nanopowder with uniform size distribution and good dispersibility were prepared by coprecipitation method. The effects of calcination temperature and time on the phase and particle size of the powders and the effect of Ce3 + doping on the fluorescence spectra of Ce: YAG powders were investigated. The precursor, YAG and Ce: YAG nanopowders were characterized and analyzed by means of IR, XRD, BET, SEM and fluorescence analyzer. The results show that the pure precipitated YAG (Ce: YAG) nanopowders can be obtained after calcined at 900 ℃ for 2 h. The obtained Ce: YAG powders have good fluorescence characteristics and the increase of doping Ce3 + Its fluorescence spectrum redshifts.
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