高效率BaAl_(4)Sb_(2)O_(12)∶Eu^(2+)荧光粉合成与发光性能  

Synthesis and Luminescent Properties of High Brightness BaAl_(4)Sb_(2)O_(12)∶Eu^(2+)Phosphors

作　　者：王凯旋 周雪莲 张钰 王泽 苏日力格 哈拉木吉 田启旭 朝克夫[1,2,3] WANG Kaixuan;ZHOU Xuelian;ZHANG Yu;WANG Ze;SURI Lige;HALA Muji;TIAN Qixu;CHAO Kefu(College of Physics and Electronic Information,Inner Mongolia Normal University,Hohhot 010022,China;Key Laboratory of Physics and Chemistry of Functional Materials,Inner Mongolia,Hohhot 010022,China;Inner Mongolia Engineering Research Center of New Energy Storage Materials,Inner Mongolia,Hohhot 010022,China)

机构地区：[1]内蒙古师范大学物理与电子信息学院,内蒙古呼和浩特010022 [2]内蒙古自治区功能材料物理与化学重点实验室,内蒙古呼和浩特010022 [3]内蒙古自治区新能源储能材料工程研究中心,内蒙古呼和浩特010022

出　　处：《发光学报》2024年第5期753-761,共9页Chinese Journal of Luminescence

基　　金：国家自然科学基金(12164034);内蒙古自然科学基金(2023LHMS01002);内蒙古科技计划项目(2019GG263)。

摘　　要：白光LED作为第四代照明光源已经广泛应用到人们生活的各个领域,其中荧光粉是获得高性能白光LED的关键材料之一。如何用简单的方法制备高性能的荧光粉是目前研究人员的一个挑战性工作。本文采用高温固相法,加入助熔剂H_(3)BO_(3)、NH_(4)Cl、SrF_(2)、LiF和BaF_(2),成功制备了BaAl_(4)Sb_(2)O_(12)∶Eu^(2+)(BASO∶Eu^(2+))荧光粉。通过晶体结构分析、发射光谱、X射线光电子能谱(XPS)以及荧光寿命分析,表明过量的Sb_(2)O_(3)能够有效地将Eu^(3+)还原成Eu^(2+),提高Eu^(2+)在563 nm处的荧光强度约12.5倍,内量子效率(IQE)可以达到96.14%。另外,还研究了不同助熔剂对荧光粉晶体结构、荧光强度以及内量子效率的影响。本实验采用的方法简单,避免使用具有一定危险的还原性气体烧结,易于工业化应用以及降低生产成本。White LED as the fourth generation of lighting light source has been widely used in various areas of people’s life,in which phosphor is one of the key materials to obtain high performance white LED.How to prepare highperformance phosphors in a simple way is a challenging task for researchers nowadays.In this paper,BaAl_(4)Sb_(2)O_(12)∶Eu^(2+)(BASO∶Eu^(2+))phosphors were successfully prepared by using a high-temperature solid-phase method with the addition of fluxes H_(3)BO_(3),NH_(4)Cl,SrF_(2),LiF and BaF_(2).The crystal structure analysis,emission spectra,X-ray photoelectron spectroscopy(XPS),and fluorescence lifetime showed that the excess Sb_(2)O_(3) could effectively reduce Eu^(3+)to Eu^(2+),increase the fluorescence intensity of Eu^(2+)at 563 nm by about 12.5 times,and the internal quantum efficiency(IQE)could reach 96.14%.And the effects of different fluxes on the crystal structure,fluorescence intensity and internal quantum efficiency of phosphor were investigated.The method adopted in this experiment is simple,avoids the use of hazardous reducing gas sintering,and is easy to be applied industrially and reduce the production cost.

关 键 词：BaAl_(4)Sb_(2)O_(12)∶Eu^(2+) 还原作用 助熔剂 白光LEDs 

分 类 号：O482.31[理学—固体物理]