Ca_(10)K(PO_4)_7:Eu^(3+)红色荧光粉的制备及其发光性质  

Synthesis and photoluminescence of Ca_(10)K(PO_4)_7:Eu^(3+) phosphor

作　　者：周国雄[1] 赵韦人[1] 宋恩海[1] 豆喜华[1] 易春雨 周民康 

机构地区：[1]广东工业大学物理与光电工程学院,广州510006 [2]惠州市纯英半导体照明科技有限公司,惠州516006

出　　处：《化工新型材料》2012年第2期46-48,共3页New Chemical Materials

基　　金：国家自然科学青年基金项目(50001010);广东省创新基金项目(09C26214405227)

摘　　要：高温固相法合成了Ca10-xK(PO4)7:xEu3+(x=0.02,0.04,0.06,0.08,0.10,0.12,0.14和0.16)的红色荧光粉。X射线衍射表明,样品具有标准的Ca10K(PO4)7六角晶体结构,且无第二相存在。在393nm的波长激发下,样品获得由Eu3+的4f-4f跃迁产生红光发射,其中以613nm附近的5 D0→7F2电偶极跃迁发射为最强。通过调节Eu3+的掺杂浓度,获得了色坐标与商业化Y2O2S:Eu3+荧光粉十分接近的接近纯色的红色荧光粉。Ca10K(PO4)7:Eu3+是一种可望应用于紫外激发的白光LED的红色荧光粉。Ca10K（PO4）7：Eu^3＋ （x=0. 02,0. 04,0. 06,0.08,0.10,0.12,0. 14 and 0. 16） phosphors were prepared by high temperature solid state reactioru X-ray diffraction showed that all samples crystallized with the standard Ca10 K （PO4）7 hexagonal crystal structure, and no secondary phase was observed. Under the excitation at wavelength 393nm, the red emission brought by the 4f-4f transition in Eu^3＋ was observed, and the strongest emission peak was near 613nm which was caused by the^5D0→7F2electric dipole transition. By adjusting Eua＋ concentration, color coordinates closed to the commercialization of Y2O2 S= Eu^3＋ Phosphor can be obtained, which endowed Ca10K（PO4）7 ： Eu3＋ with promising red phosphors used in NUV-chip based white light emitting LEDs.

关 键 词：磷酸盐 高温固相法 红色荧光 LEDs 

分 类 号：O482.31[理学—固体物理]