Ce^(3+)掺杂Ba_(3)Y_(2)(BO_(3))_(4)荧光粉发光性能及应用  

Luminescence Properties and Application of Ce^(3+)Doped Ba_(3)Y_(2)(BO_(3))_(4) Phosphor

作　　者：孙晓园 刘椿淼 李敏 田宛鹭 娄文静 李昊翔 谭琴琴 李诚 骆永石[2] SUN Xiaoyuan;LIU Chunmiao;LI Min;TIAN Wanlu;LOU Wenjing;LI Haoxiang;TAN Qinqin;LI Cheng;LUO Yongshi(Department of Physics,Changchun Normal University,Changchun 130032,China;Key Laboratory of Luminescence Science and Technology,Chinese Academy of Sciences&State Key Laboratory of Luminescence and Applications,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China)

机构地区：[1]长春师范大学物理学院,吉林长春130032 [2]中国科学院长春光学精密机械与物理研究所特种发光科学与技术重点实验室,吉林长春130033

出　　处：《发光学报》2024年第12期1992-2001,共10页Chinese Journal of Luminescence

基　　金：吉林省科技发展计划(YDZJ202101ZYTS176)。

摘　　要：采用高温固相法制备了Ce^(3+)掺杂的Ba3Y2(BO3)4荧光粉。通过X射线衍射谱测定样品的晶体结构,研究了样品的激发和发射光谱、荧光衰减曲线、色坐标和变温光谱。在紫外光的激发下,Ce^(3+)掺杂的Ba_(3)Y_(2)(BO_(3))_(4)荧光粉发出明亮的蓝光,发射峰中心位于420 nm附近,半高宽大于83 nm。随着Ce^(3+)离子掺杂浓度增加,样品的发光强度先增强后减弱。随着Ce^(3+)掺杂浓度变化,样品CIE坐标变化较小,说明样品色彩稳定性好。随温度的升高,样品的发光强度降低,样品的热稳定性有待提高。把样品和商粉结合365 nm芯片制成白光LED,其色坐标为(0.33,0.39),显色指数为92.6,色温为5570 K。结果表明,Ba_(3)Y_(2)(BO_(3))_(4)∶Ce^(3+)荧光粉是一种新型的可用于白光LED的宽带发射蓝色荧光粉。Ce^(3+)doped Ba_(3)Y_(2)(BO_(3))_(4) phosphors were synthesized by the solid-state reaction technique.The crystal structure was analyzed by the X-ray diffraction patterns.The photoluminescence excitation and emission spectra,photoluminescence decay curves,the CIE coordinates and temperature dependent emission spectra were studied.The bright blue emission of Ba_(3)Y_(2)(BO_(3))_(4)∶Ce^(3+)phosphors peaks around 420 nm was observed under the UV excita-tion,the full width at half maximum is over 83 nm.The integrated luminescence intensities increase first and then decrease with increasing Ce^(3+)concentration.The CIE coordinates of the samples with the increasing of Ce^(3+)concen-tration change slightly,indicating that the color stability of the samples was excellent.With the temperature increas-ing the emission intensity of samples decreased,the thermal stability of the sample needs to be improved.A white LED was fabricated by using a 365 nm LED chip combined with Ba_(3)Y_(2)(BO_(3))_(4)∶Ce^(3+)phosphor and commercial phos-phor,the CIE was(0.33,0.39),CCT was 5570 K,and Ra was 92.6.These results indicated that Ba_(3)Y_(2)(BO_(3))_(4)∶Ce^(3+)phosphor could be as a blue broad emission band LED phosphor.

关 键 词：荧光粉 Ce^(3+)掺杂 白光LED 

分 类 号：O482.31[理学—固体物理]