摘要
采用高温固相法制备了Ce^3＋、Sm^3＋和Ce^3＋/Sm^3＋掺杂的Ca9Al（PO4）7荧光粉。以327 nm紫外光作为激发源时,Ca9Al（PO4）7：Ce^3＋在386 nm处出现宽发射峰,其发射对应于Ce^3＋的4f^05d^1→4f^1跃迁的蓝色光,主峰位于386 nm;在407 nm近紫外光激发下,Ca9Al（PO4）7：Sm^3＋发射红色光。为了增强Ca9Al（PO4）7：Sm^3＋的发射强度,将Ce^3＋引入到材料中,通过Ce^3＋到Sm^3＋的能量传递,有效地增强了材料的发射强度,为开展白光LEDs用红色荧光粉提供了参考。
In order to enhance the luminescence intensity of Sm^3＋ in Ca9Al（PO4）7, a series of Ce^3＋, Sm^3＋ and Ce^3＋/Sm^3＋ doped Ca9Al（PO4）7 phosphors were synthesized by a high-temperature solid-state method. When the 327-nm light is used as an excitation source, Ca9Al（PO4）7：Ce^3＋ can show a broad band peaking at 386 nm, which corresponds to the 4 f 05 d1→4 f 1 transition of Ce^3＋ ions. Ca9Al（PO4）7：Sm^3＋ can be efficiently excited by 407 nm near-ultraviolet, thus emitting red light. The luminescence intensity of Ca9Al（PO4）7：Sm^3＋ can be enhanced when Ce^3＋ ions are introduced into Ca9Al（PO4）7：Sm^3＋ due to the energy transfer from Ce^3＋ to Sm^3＋ ions.
作者
刘海燕
李美凡
王智朋
尤美
曹冬雪
周玲玉
王卓光
王聪
王志军
李盼来
LIU Haiyan;LI Meifan;WANG Zhipeng;YOU Mei;CAO Dongxue;ZHOU Lingyu;WANG Zhuoguang;WANG Cong;WANG Zhijun;LI Panlai(School of Cyber Security and Computer,Hebei University,Baoding 071002,China;Hebei Key Lab of Optic-electronic Information and Materials,College of Physics Science ＆ Technology,Hebei University,Baoding 071002,China)
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2018年第10期1453-1457,共5页
Journal of The Chinese Ceramic Society
基金
河北省人才培养工程项目(2016002013)
中国博士后科学基金项目(2015M581311)
河北大学大学生创新、创业训练计划项目(201710075070)
关键词
荧光粉
能量传递
钐铈共掺磷酸铝钙
高温固相法
phosphors
luminescence
energy transfer
samarium-cerium codoped aluminum calcium phosphate
high-temperaturesolid-state method
