摘要
制备了Ho3-/Yb3+共掺的氧氟硅酸盐玻璃,根据玻璃样品的差热分析(DTA)进行微晶化处理,测试了Ho3+/Yb3+共掺做晶玻璃的X射线衍射(XRI))图谱、透射电镜(TEM)谱、吸收光谱和上转换发光光谱。根据seherrer公式计算了CaF2微品的平均晶粒尺寸,并与TEM谱进行比对;利用品体生长动力学理论研究了纳米CaF2晶粒的生长特性,获得纳米CaF2晶体生长动力学方程;研究了微品玻璃中HO3+离子的上转换发光特性;分析了微晶玻璃上转换发光机制。研究结果表叫氧氟硅酸盐微晶玻璃是一种良好的上转换基质材料。
Ho^3＋/Yb^3＋ codoped oxyfluoride silicate glass has been prepared. According to differetial thermal analysis （DTA） studies, the as-made glass was crystallized. X-ray diffraction （XRD） spectrum, transmission electron microscope （TEM） spectrum, absorption spectrum and up-conversion luminescence of glass ceramics were measured. The average crystallite size of CaF2 glass ceramics was calculated by Scherrer formula and compared with that of TEM. The crystal growth characteristics of nanometer CaF2 as well as effects on the diameter of CaF2 were studied by the kinetics theory of crystal growth. The dynamics equation of crystal growth of nanometer CaF2 was obtained. The upconversion fluorescence emission spectra of Ho^3＋/Yb^3＋ in oxyfluoride silicate glass ceramics were investigated and the upconversion luminescence mechanism of oxyfluoride silicate glass ceramics was analyzed . The results indicate that the oxyfluoride silicate glass ceramics is a potential luminescence material for upconversion green lasers.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2009年第5期1184-1189,共6页
Chinese Journal of Lasers
基金
国家自然科学基金(60508014
50772102)
浙江省分析测试科技计划(2007F70050)
教育部新世纪人才支持计划(NECT-07-0786)资助课题
关键词
材料
氧氟硅酸盐微晶玻璃
上转换发光
X射线衍射
HO^3+
materials
oxyfluoride glass silicate ceramics
upconversion luminescence
X-ray diffraction
Ho^3＋
