Sr_(3)AlO_(4)F∶Eu^(3+),Dr^(3+),Na^(+)发光材料性能  

Luminescence Properties of Eu^(3+),Dr^(3+),Na^(+)Doped Sr_(3)AlO_(4)F

作　　者：梁瑞含 赵惠明 张艳吉 李文霞 米晓云 LIANG Ruihan;ZHAO Huiming;ZHANG Yanji;LI Wenxia;MI Xiaoyun(Research Institute of Changchun University of Science and Technology in Chongqing,Chongqing 401120,China;School of Materials Science and Engineering,Changchun University of Science and Technology,Changchun 130022,China)

机构地区：[1]长春理工大学重庆研究院,重庆401120 [2]长春理工大学材料科学与工程学院,吉林长春130022

出　　处：《发光学报》2025年第3期496-507,共12页Chinese Journal of Luminescence

基　　金：重庆市自然科学基金面上项目(cstc2021jcyj-msxmX1001);稀土资源利用国家重点实验室开放课题(RERU2023002)。

摘　　要：采用高温固相法制备了一系列Sr_(3)AlO_(4)F∶Eu^(3+),Dr^(3+),Na^(+)红色发光材料。使用X射线衍射、扫描电子显微镜、光谱仪等设备对Sr_(3)AlO_(4)F∶Eu^(3+),Dr^(3+),Na^(+)红色发光材料进行检测。Eu^(3+)、Dr^(3+)和Na^(+)的浓度(摩尔分数)分别为11%、5%和4%时样品的发光强度最高。导致Eu^(3+)和Dr^(3+)发生浓度猝灭的机制分别为四级-四级相互作用和偶极-偶极相互作用。在Eu^(3+)、Dr^(3+)共掺杂实验中,证明了存在Dr^(3+)向Eu^(3+)的能量传递。此外,加入Na^(+)作为电荷补偿剂提高了Sr_(3)AlO_(4)F的发光性能,加入4%Na^(+)后发光强度提升近4倍。探究了Sr_(3)AlO_(4)F发光材料的热稳定性,在150℃时,共掺杂Eu^(3+)、Dr^(3+)样品的发光强度为30℃时的72.71%。Sr_(3)AlO_(4)F∶Eu^(3+),Dr^(3+),Na^(+)这种新型的红色发光材料有利于提高白光发光二极管的显色指数。A series of Eu^(3+),Dr^(3+)and/or Na^(+)doped Sr_(3)AlO_(4)F phosphors were synthesized by a solid state reaction.The properties of Sr_(3)AlO_(4)F∶Eu^(3+),Dr^(3+),Na^(+)phosphors were analyzed by X-ray diffraction,scanning electron microsco-py,X-ray photoelectron spectroscopy,photoluminescence spectra,and other tests.The luminous intensity of the sample was the highest at the concentrations(mole fraction)of Eu^(3+),Dr^(3+)and Na^(+)at 11%,5%and 4%,respective-ly.The concentration quenching mechanism of single-doped Eu^(3+)and Dr^(3+)is quadrupole-quadrupole interaction and dipole-dipole interaction in Sr_(3)AlO_(4)F phosphor.The experiment of Eu^(3+)and Dr^(3+)co-doping suggests possible energy transfer from Dr^(3+)to Eu^(3+).Furthermore,the addition of Na^(+)as a charge compensator improved the luminescence per-formance of Sr_(3)AlO_(4)F was increased by nearly 4 times.The thermal stability of the Sr_(3)AlO_(4)F∶Eu^(3+),Dr^(3+)sample was examined,revealing that the luminescence intensity of Sr_(3)AlO_(4)F∶Eu^(3+),Dr^(3+)at 150℃remained at 72.71%of that at 30℃.The new type of red phosphor Sr_(3)AlO_(4)F∶Eu^(3+),Dr^(3+),Na^(+)is beneficial for improving the color rendering index of white light emitting diodes.

关 键 词：高温固相法 能量传递 光致发光 Sr_(3)AlO_(4)F∶Eu^(3+) Dr^(3+) Na^(+) 红色发光材料 

分 类 号：O482.31[理学—固体物理]