近紫外光激发的颜色可调Sr_2SiO_4:Gd^(3+),Tb^(3+),Eu^(3+)荧光粉的制备及其发光性能研究  

Preparation and Luminescent Property of Near-Ultraviolet-Excited Color-Tunable Sr_2SiO_4:Gd^(3+),Tb^(3+),Eu^(3+) Phosphors

作　　者：霍涌前[1] 王婷 汪英杰 张科 陈小利[1] HUO Yong-qian;WANG Ting;WANG Ying-jie;ZHANG Ke;CHEN Xiao-li(Key Laboratory of Chemical Reaction Engineering of Shaanxi,College of Chemistry＆ Chemical Engineering,Yan′an University,Yan′an 716000,China;College of Chemistryand Life Sciences,Zhejiang Normal University,Jinhua 321004,China;College of Chemistry,Chemical Engineering and Biotechnology,Donghua University,Shanghai 201620,China;School of Materials Engineering,Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]陕西省化学反应工程重点实验室延安大学化学与化工学院,陕西延安716000 [2]浙江师范大学化学与生命科学学院,浙江金华321004 [3]东华大学化学化工与生物工程学院,上海201620 [4]上海工程技术大学材料工程学院,上海201620

出　　处：《化学与生物工程》2018年第10期21-25,40,共6页Chemistry & Bioengineering

基　　金：国家级大学生创新创业训练计划项目(201610719026);陕西省大学生创新创业训练计划项目(20161523)

摘　　要：采用液相沉淀法制备了近紫外光激发的颜色可调Sr_2SiO_4:0.06Gd^(3+),0.06Tb^(3+)、Sr_2SiO_4:0.06Gd^(3+),0.06Eu^(3+)和Sr_2SiO_4:0.06Gd^(3+),0.03Tb^(3+),0.03Eu^(3+)荧光粉,利用XRD、SEM、荧光光谱以及色坐标分析研究了所制备荧光粉的结构、形貌和发光性能。XRD分析表明,Sr_2SiO_4:0.06Gd^(3+),0.06Tb^(3+)、Sr_2SiO_4:0.06Gd^(3+),0.06Eu^(3+)和Sr_2SiO_4:0.06Gd^(3+),0.03Tb^(3+),0.03Eu^(3+)荧光粉样品属单斜晶系。荧光光谱分析表明,Sr_2SiO_4:Gd^(3+),Tb^(3+),Eu^(3+)的激发光谱包括200~300nm的宽带吸收峰和Tb^(3+)、Eu^(3+)的系列吸收峰。在243nm、354nm紫外光激发下,Sr_2SiO_4:0.06Gd^(3+),0.06Tb^(3+)的发射光谱由Tb^(3+)的~5D_4→~7F6(490nm,蓝绿光)、~5D_4→~7F_5(548nm,绿光)和~5D_4→~7F4(588nm,黄光)跃迁发射峰组成。在243nm、364nm紫外光激发下,Sr_2SiO_4:0.06Gd^(3+),0.06Eu^(3+)的发射光谱由Eu^(3+)的~5D_0→~7F_1(591nm,橙光)、~5D_0→~7F2(614nm,红光)、~5D_0→~7F_3(652nm,红光)跃迁发射峰组成。在243nm、252nm、364nm紫外光激发下,Sr_2SiO_4:0.06Gd^(3+),0.03Tb^(3+),0.03Eu^(3+)的发射光谱由Tb^(3+)的~5D_4→~7F_6(490nm,蓝绿光)、~5D_4→~7F_5 (548nm,绿光)、~5D_4→~7F_4(588nm,黄光)和Eu^(3+)的~5D_0→~7F_1(591nm,橙光)、~5D_0→~7F_2(614nm,红光)、~5D_0→~7F_3(652nm,红光)跃迁发射峰组成。色坐标分析表明,Sr_2SiO_4:0.06Gd^(3+),0.03Tb^(3+),0.03Eu^(3+)是很好的近紫外光激发的三色发光荧光粉。We prepared near-ultraviolet-excited color-tunable Sr2SiO4：0.06Gd^3＋ ,0.06Tb^3＋ ,Sr2SiO4： 0.06 Gd^3＋ , 0.06 Eu^3＋ ,and Sr2SiO4：0.06Gd^3＋ ,0.03Tb^3＋ ,0.03Eu^3＋ phosphors by a liquid-phase precipitation method,and studied their structures,morphologies,and luminescent properties by XRD,SEM,fluorescence spectra,and Commission International de L′Eclairage（CIE） color coordinate analysis.The XRD results indicate that the Sr2SiO4：0.06Gd^3＋ , 0.06 Tb^3＋ ,Sr2SiO4：0.06Gd^3＋ ,0.06Eu^3＋ ,and Sr2SiO4：0.06Gd^3＋ ,0.03Tb^3＋ , 0.03 Eu^3＋ phosphors belong to a monoclinic crystal system.The fluorescence spectra indicate that the emission spectra of the Sr2SiO4：Gd^3＋ ,Tb^3＋ ,Eu^3＋ phosphors exhibit a broad absorption band in the range of 200-300 nm and a series of individual absorption peaks of Tb^3＋ and Eu^3＋ .The emission spectra of the Sr2SiO4： 0.06 Gd^3＋ ,0.06Tb^3＋ phosphors excited by 243 nm and 354 nm are composed of 5 D4→ 7 F6（490 nm,blue-green）, 5 D4→ 7 F5（548 nm,green）,and 5 D4→ 7 F4（588 nm,yellow） emission peaks of Tb^3＋ .The emission spectra of the Sr2SiO4： 0.06 Gd^3＋ , 0.06 Eu^3＋ phosphors excited by 243 nm and 364 nm are composed of 5 D0→ 7 F 1（591 nm,orange）, 5 D0→ 7 F 2（614 nm,red）,and 5 D0→ 7 F 3（652 nm,red） emission peaks of Eu^3＋ .The emission spectra of the Sr2SiO4：0.06Gd^3＋ ,0.03Tb^3＋ ,0.03Eu^3＋ phosphors excited by 243 nm,252 nm,and 364 nm are composed of 5 D4→ 7 F6（490 nm,blue-green）, 5 D4→ 7 F5（548 nm,green）,and 5 D4→ 7 F4 （588 nm,yellow） emission peaks of Tb^3＋ ,as well as 5 D0→ 7 F 1（591 nm,orange）, 5 D0→ 7 F 2（614 nm,red）,and 5 D0→ 7 F 3（652 nm,red） emission peaks of Eu^3＋ .CIE color coordinate indicates that Sr2SiO4： 0.06 Gd^3＋ ,0.03Tb^3＋ ,0.03Eu^3＋ is a near-ultraviolet-excited tricolor phosphor.

关 键 词：Sr2SiO4:Gd^3+ Tb^3+ Eu^3+ 发光材料 荧光粉 发光性能 

分 类 号：O611.4[理学—无机化学] O614.33[理学—化学]