Yb^(3+)、Eu^(3+)共掺杂天然方纳石的上/下转换发光特性  

Up-and Down-conversion Luminescence Properties of Natural Sodalite Doped with Europium and Ytterbium

作　　者：巴合提古丽·阿斯里别克 吐尔逊·艾迪力比克 ASLIBIEKE Baheliguli;AIDILBIKE Tuerxun(Optoelectronic Materials and Devices Laboratory,College of Electronic&Information Engineering,Yili Normal University,Yining 835000,Xinjiang,China)

机构地区：[1]伊犁师范大学电子与信息工程学院,光电材料与器件实验室,新疆伊宁835000

出　　处：《硅酸盐学报》2021年第4期763-768,共6页Journal of The Chinese Ceramic Society

基　　金：自治区自然科学基金(2015211C295)。

摘　　要：利用固相法制备了Yb^(3+)和Eu^(3+)共掺杂天然方纳石粉末样品.978 nm激发下获得了天然方纳石的上转换光谱,讨论了Eu^(3+)的可见光上转换发光的合作能量传递过程.研究了荧光粉的晶体结构,该样品在265 nm激发下出现了主峰在611 nm附近较强的红色荧光,其色度坐标为(0.661,0.339),其发光来自于Eu^(3+)的^(5)D_(0)→^(7)F_(2)跃迁,可以用作红色荧光粉,探讨了样品发光物理机制.The up-conversion(UC)luminescence properties of natural sodalite(Na8Al6Si6024Cl2)co-doped with Europium and ytterbium(Eu^(3+)and Yb^(3+),respectively)was studied for the first time under excitation of near infrared reflectance(NIR)light.Cooperative energy transfer process was discussed as the possible mechanism for the visible up-conversion luminescence of Eu^(3+).The crystal structure of fluorescent powder was investigated using an X-ray powder diffraction system.The prepared phosphors radiate very strong red fluorescence with chromaticity coordinates of(0.661,0.339)at 265 nm excitation,which consists of red light with higher purity at 611 nm due to Eu^(3+)(^(5)D_(0)→^(7)F_(2)),so it can be used as a red phosphor.The photo physics involved in this emission is explained.

关 键 词：三价镱离子团簇 合作敏化 合作发光 能量传递 发光材料 

分 类 号：O482.31[理学—固体物理]