Li^+、Na^+和Eu^(3+)共掺Lu_2O_3的制备及发光特性研究  

Preparation and Luminescence Properties of Li^+,Na^+ and Eu^(3+) Co-doped Lu_2O_3

作　　者：庹娟 王林香[1,2,3] 李敏[1,2,3] 

机构地区：[1]新疆师范大学物理系,新疆乌鲁木齐830054 [2]新疆师范大学矿物发光及其微结构重点实验室,新疆乌鲁木齐830054 [3]新疆师范大学理论物理自治区重点学科,新疆乌鲁木齐830054

出　　处：《发光学报》2016年第1期28-32,共5页Chinese Journal of Luminescence

基　　金：新疆维吾尔自治区自然科学基金(2012211B16)资助项目

摘　　要：用高温固相法合成了不同掺杂浓度的Li^+、Na^+和Eu^(3+)共掺Lu2O3闪烁体发光材料,使用XRD进行结构表征,用扫描电镜观察了样品形貌,测量了激发光谱、发射光谱,分析了Li+、Na+和Eu3+的掺杂浓度以及温度对合成样品发光强度的影响。结果显示,Li^+、Na^+掺杂摩尔分数分别为2.5%和1%,在800℃空气中煅烧2 h制备的Lu2O3∶5%Eu~ (3+)样品的发光最强。在同样条件下,比单掺2.5%Na+的样品发光强度提高1.89倍,比单掺2.5%Li+的样品发光强度提高3.97倍,比不掺Li+和Na+的样品发光强度提高6.43倍。Li^＋,Na^＋ and Eu^3＋co-doped Lu2O3 phosphors were synthesized by the high temperature solid-state reaction. The structure of the sample was characterized by XRD,the morphology was observed with scanning electron microscope,the excitation spectra and emission spectra were measured,and the effects of Li^＋,Na^＋and Eu^3＋doping concentration and the calcined temperature on the luminescence intensity of the synthesized samples were analyzed. The results show that the emission of the sample with 2. 5% Li^＋,1% Na^＋and 5% Eu^3＋co-doped Lu2O3 is the strongest in the four samples calcined at 800 ℃ in the air for 2 h. In the same condition,the luminous intensity of Lu2O3∶5% Eu^3＋,2. 5% Li^＋,1% Na^＋is 1. 89 times than that only with 2. 5% Na^＋doping,3. 97 times than that only with 2. 5% Li^＋doping,and 6. 43 times than that without Li^＋and Na^＋ doping.

关 键 词：闪烁体 Li^+、Na^+和Eu^3+共掺Lu2O3 高温固相法 发光强度 

分 类 号：O482.31[理学—固体物理]