Li^+,Zn^(2+),Mg^(2+)掺杂Lu_2O_3∶Er^(3+)荧光粉的制备及发光特性  

Preparation and luminescence properties of Li^+,Zn^(2+),Mg^(2+) doped Lu_2O_3∶Er^(3+) phosphors

作　　者：王林香[1,2,3] 庹娟 叶颖 赵海琴 WANG Lin-xiang;TUO Juan;YE Ying;ZHAO Hai-qin(Key Laboratory of Novel Light Source and Micro/Nano-Optics,Xinjiang Normal University,Urumqi 830054,China;Key Laboratory of Novel Luminescent Materials and Nanostructures,Xinjiang Normal University,Urumqi 830054,China;Key Discipline Physics,Xinjiang Normal University,Urumqi 830054,China)

机构地区：[1]新疆师范大学新型光源与微纳光学重点实验室,乌鲁木齐830054 [2]新疆师范大学矿物发光及其微结构重点实验室,乌鲁木齐830054 [3]新疆师范大学物理学重点学科,乌鲁木齐830054

出　　处：《中国光学》2019年第1期112-121,共10页Chinese Optics

基　　金：新疆维吾尔自治区自然科学基金(No.2017D01A60);新疆师范大学新型光源与微纳光学重点实验室项目(No.XJNUSYS092018B06)资助~~

摘　　要：用微波高温固相法合成了Er^(3+)单掺Lu_2O_3,Li^+与Er^(3+)共掺Lu_2O_3及Li^+,Zn^(2+),Mg^(2+)掺杂Lu_2O_3∶Er^(3+)的荧光粉。实验表明金属离子Li^+、Zn^(2+)、Mg^(2+)、Er^(3+)掺杂Lu_2O_3,不影响Lu_2O_3的立方晶相。扫描电子显微镜测量表明,Li^+掺杂可以有效改善粉体的分散性和形貌,Li^+,Zn^(2+),Mg^(2+)共掺杂获得的粉体颗粒分布更加均匀,粒径范围为80～100 nm。379 nm激发下,Li^+与Er^(3+)共掺样品发光较单掺Er^(3+)样品在565 nm处的发光增强了4.5倍,而Li^+、Zn^(2+)、Mg^(2+)与Er^(3+)共掺样品较其发光增强5.3倍。980 nm激发下,Li^+与Er^(3+)共掺样品,Li^+、Zn^(2+)、Mg^(2+)与Er^(3+)共掺样品的发光分别比单掺Er^(3+)样品在565 nm处发光增强23倍与39倍,在662 nm处发光强度分别增强20倍与43倍。379 nm激发下,较单掺Er^(3+)的样品,掺杂Li^+的样品和Li^+,Zn^(2+),Mg^(2+)和Er^(3+)共掺的样品荧光寿命均有所增加,而Zn^(2+)、Er^(3+)共掺及Mg^(2+)、Er^(3+)共掺样品的荧光寿命则有所缩短。Li^+,Zn^2+,Mg^2+,Er^3+doped Lu2O3 phosphors were synthesized using the microwave heating high temperature solid state method.The experimental results indicate that doping with Li^+,Zn^2+,Mg^2+and Er^3+will not affect the cubic phase of Lu2O3.SEM measurements show that Li^+doping can effectively improve the dispersibility and morphology of the sample powder,and the powder particle size distribution obtained by the co-doping of Li^+,Zn^2+and Mg^2+are more uniform with a particle size of 80-100 nm.The excitation spectra,emission spectra and the fluorescence lifetime of the samples were detected and analyzed using a fluorescence spectrophotometer.The results showed that under 379 nm excitation,the luminescence intensities of samples doped with 5%Li+and 2%Er 3+,and that of samples doped with 5%Li^+,2.5%Zn^2+,2.5%Mg^2+and 2%Er^3+increased by 4.5 and 5.3 times than that of the sample only doped with Er^3+ions at 565 nm.Under 980 nm excitation,the up-conversion luminescence intensities of samples doped with 5%Li^+and 2%Er^3+,and that of samples doped with 5%Li^+,2.5%Zn^2+,2.5%Mg^2+and 2%Er^3+increased by 23 and 39 times than that of samples doped only with Er 3+ions at 565 nm.This increased by 20 and 43 times at 662 nm.Under 379 nm excitation,the lifetime of the samples doped with Li^+was longer than that without Li^+.The lifetime of the samples co-doped with Li^+,Zn^2+,Mg^2+and Er^3+increased,while the lifetime of the samples co-doping of Zn^2+,Er^3+and Mg^2+,Er^3+decreased.

关 键 词：微波高温固相法 Li^+ Zn^2+ Mg^2+掺杂Lu2O3∶Er^3+荧光粉 发光强度 上转换发光 荧光寿命 

分 类 号：O614.3[理学—无机化学] TQ17[理学—化学]