摘要
采用凝胶网格共沉淀法,以明胶为反应基质制备单分散球形纳米Y2_O3_:Eu(3+)~荧光粉,考察了制备条件对产物粒径的影响。利用X射线衍射(XRD)、透射电镜(TEM)和荧光光谱等手段对样品进行了表征。结果表明:该法制得产物为球形,一次晶粒粒径在13nm^25nm之间,且粒度分布均匀,与微米晶相比,该纳米晶的激发光谱发生明显红移。
Monodispersed spherical Y2O3:Eu3+ nanocrystallines were successfully prepared by a novel gel-network coprecipitation process. The effect of reaction conditions on the resulting particles was investigated. XRD, TEM and fluorescence spectra were used to characterize the samples. The results show that the samples are spherical with a particle size of 13 nm∼ 25 nm. Compared with micronscale Y2O3:Eu3+, a clear red shift occurs in the excitation spectrum of Y2O3:Eu3+ nanocrystalline prepared by the method.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2005年第4期632-634,共3页
Rare Metal Materials and Engineering
基金
河南省自然科学基金(0111030200)
河南省教育厅基金(1999150029
2000150038)
河南省高校青年骨干教师基金资助
