发光学报2017，Vol.38Issue(5)：567-573,7.DOI:10.3788/fgxb20173805.0567
溶胶凝胶法合成CaYAlO4∶Mn4+红色荧光粉及其荧光性能研究
Luminescent Properties of CaYAlO4∶ Mn4+ Red Phosphors Prepared by Sol-gel Method
摘要
Abstract
CaYAl1-xO4∶ xMn4+ red phosphors were prepared by sol-gel method.Differential thermal and thermogravimetric analysis (DSC-TGA),X-ray powder diffraction (XRD),transmission electron microscopy (TEM) and photoluminescence spectrophotometer were utilized to characterize the samples.The effects of the factors,such as synthesis temperature,reaction time and concentration of Mn4+ on the luminescent properties of the phosphors were studied.The samples give red emissions centered at 660-780 nm under 335 nm excitation,which correspond to 2Es→ 4A2g trans1tion of Mn4+.The excitation spectrum monitored by 712 nm consists of two broad excitation bands resulting from 4A2g→ 4T1g(335 nm) and 4A2g→ 4T2g (475 nm) transition of Mn4+.The maximun luminescent intensity of CaYAl1-x O4∶ xMn4+ phosphors can be obtained with x =0.005 under calcination at 1 200 ℃ for 6 h.关键词
溶胶凝胶法/CaYAlO4∶Mn4+/红色荧光粉Key words
sol-gel method/CaYAlO4 ∶ Mn4 +/red phosphors分类
数理科学引用本文复制引用
陈彩花,杨国辉,梁利芳,蒙丽丽,张丽霞..溶胶凝胶法合成CaYAlO4∶Mn4+红色荧光粉及其荧光性能研究[J].发光学报,2017,38(5):567-573,7.基金项目
国家自然科学基金(21161004) （21161004）
广西自然科学基金(2011GXNSFA018048)资助项目 Supported by National Natural Science Foundation of China (21161004) （2011GXNSFA018048）
Natural Science Foundation of Guangxi Province (2011GXNSFA018048) （2011GXNSFA018048）
