燃烧法制备Eu^(3+)掺杂红色发光材料及其发光性能  

Preparation and luminescence properties of Eu^(3+)doped red luminescent materials by combustion method

作　　者：钟彤晖 茹晶晶 赵兵[3] 黄晓家 ZHONG Tong-hui;RU Jing-jing;ZHAO Bing;HUANG Xiao-jia(College of Chemistry and Materials,Ningde Normal University,Ningde,Fujian 352100,China;Fujian Province University Key Labora-tory of Green Energy and Environment Catalysis,Ningde Normal University,Ningde,Fujian 352100,China;College of Information and Mechanical&Electrical Engineering,Ningde Normal University,Ningde,Fujian 352100,China)

机构地区：[1]宁德师范学院化学与材料学院,福建宁德352100 [2]宁德师范学院绿色能源与环境催化福建省高校重点实验室,福建宁德352100 [3]宁德师范学院信息与机电工程学院,福建宁德352100

出　　处：《宁德师范学院学报（自然科学版）》2022年第4期343-346,353,共5页Journal of Ningde Normal University(Natural Science)

基　　金：福建省大学生创新创业项目(S202210398012);福建省中青年教师教育科研项目(JAT210469);宁德师范学院青年专项项目(2021Q106)。

摘　　要：采用燃烧法,以柠檬酸为助燃剂,在一定温度下反应4 h,成功制备Li_(2)Y_(4-x)Eu_(x)(MoO_(4))_(7)(x=0.2,4.0)红色发光材料;探讨煅烧温度和柠檬酸与产物总金属阳离子的摩尔比(C∶M值范围为1∶1~5∶1)对样品发光性能的影响,并对其结构和发光性能进行测试分析.结果表明,当煅烧温度为750℃,C∶M=2∶1时样品的发光性能最好.Li_(2)Eu_(4)(MoO_(4))_(7)样品分别能被395 nm近紫外光和465 nm蓝光有效激发,于615 nm处发出明亮红光,表明该样品能够有效用于近紫外光和蓝光激发的白光LED用红色荧光粉.A series of phosphors Li_(2)Y_(4-x)Eux(MoO_(4))_(7)(x=0.2,4.0)were synthesized by a combustion method.The structure and luminescent properties were investigated by XRD and fluorescence spectrometer.The combustion temperature as well as the mass ratio of citric acid and total metal cations were discussed.The results show that sintered temperature is 750℃and C∶M=2∶1,the luminescence intensity of Li_(2)Y_(3.8)Eu_(0.2)(MoO_(4))_(7)is strongest.Li_(2)Eu_(4)(MoO_(4))_(7)sample can be excited by near-UV light at 395 nm and blue light at 465 nm,and then emit red light at 615 nm,indicating that this phosphor could be effectively used as red phosphor for white-LED which can be excited by near UV light and blue light.

关 键 词：Eu^(3+)掺杂红色发光材料 燃烧法 柠檬酸 发光性能 

分 类 号：O482.31[理学—固体物理]