Li^+掺杂对ZnTiO_3:Eu^(3+)荧光粉结构和发光性能的影响  

Effect of Doping Li^+ on Structure and Luminescence of ZnTiO_3: Eu^(3+) Phosphor

作　　者：赵景川[1,2] 胡聪[2] 邵阳阳[2] 王韬[2] 焦宝祥[1,2] 刘银[1] 张霞[2] 

机构地区：[1]安徽理工大学材料科学与工程学院,淮南232001 [2]盐城工学院材料工程学院,盐城224051

出　　处：《中国陶瓷》2017年第2期33-38,共6页China Ceramics

基　　金：江苏省科技厅社会发展项目(BE2015659,BE2015152);江苏高校品牌专业建设工程项目(PPZY2015A025);江苏省墙改办项目(2014-651-08);江苏省高校自然科学基金(13KJB430024)

摘　　要：为了提高ZnTiO_3:Eu^(3+)(ZTOE)红色荧光粉的发光性能,通过溶胶-凝胶法制备了Li^+掺杂的ZTOE荧光粉,探讨了Li^+的晶格占位对ZTCE发光性能的影响。通过掺杂不同浓度的Li^+离子,ZTCE的发光性能得到明显的提高。与不掺杂的ZTOE荧光粉相比,掺杂4 mol%Li^+的荧光粉在位于615 mm处的红光发射峰提高了约2.1倍。ZnTiO_3:Eu^(3+),Li^+的色度坐标为(x=0.670,y=0.328),更加接近国际照明委员会(NTSC)指定的红色坐标(x=0.670,y=0.330)。In order to enhance the luminescent performance of ZnTiO3 ： Eu^3＋ （ZTOE）, a series of red-emitting phosphor of ZTOE doped with Li^＋ was synthesized via sol-gel method. The influence of lattice site occupancy of Li^＋ on the emission of ZTOE was investigated in detail. The emission intensity was significantly enhanced by introducing different concentrations of Li^＋ ions. In contrast to lithium-free ZTOE, the red emission intensities （615 nm） of the ZTOE doped with 4 mol% Li^＋ ions were enhanced by about 2.1 times. Moreover, The chromaticity coordinate of ZnTiO3 ： Eu^3＋, Li^＋ （x=0.6717, y=0.3280） has a higher color purity, which is closer to the International Association of Lighting NTSC trichromatic coordinates specified red coordinate （x=0.670, y=0.330）.

关 键 词：ZnTiO3 Eu^3^+ LI^+ 荧光粉 发光 

分 类 号：O482.31[理学—固体物理]