Y_2O_3:Er^(3+)纳米晶anti-Stokes发光性质的研究  

The study of anti-Stokes photoluminescence properties in the Y_2O_3:Er^(3+) nanocrystals

作　　者：王新[1] 单桂晔[2] 安利民[3] 朝克夫[1] 曾庆辉[1] 陈宝玖[1] 孔祥贵[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所激发态物理重点实验室,长春130033 [2]吉林大学化学系,长春130023 [3]东北师范大学物理系,长春130024

出　　处：《物理学报》2004年第6期1972-1976,共5页Acta Physica Sinica

基　　金：中国科学院重大基金 (批准号 :2 0 0 2CD713 80 2 );国家"863"计划 (批准号 :2 0 0 2AA3 0 2 2 0 3 )资助的课题~~

摘　　要：采用均相沉积法制备了不同Er3+ 离子浓度掺杂的Y2 O3纳米晶 ,应用XRD ,SEM和PL光谱对该体系材料进行了表征 .在Y2 O3:Er3+ 纳米材料体系中 ,观察和研究了Stokes及anti StokesPL谱强度与Er3+ 离子摩尔浓度变化的关系 ,当Er3+ 离子浓度为 2 0mol%时 ,anti StokesPL强度最强 .粉末XRD和SEM照片分别表明 :制备的Y2 O3:Er3+ 纳米材料具有立方相结构 ,且粒径分布均匀 .实验结果证明 :antiThe homogeneous precipitation method was used for preparing nanocrystalline erbium doped Y 2O 3 with various molar concentrations. These materials synthesized in the system were characterized with XRD, SEM micrograph and PL spectra. Stokes and anti Stokes PL emissions of Y 2O 3:Er 3+ nanocrystals were investigated, whose intensities were varied evidently with a range of dopant erbium ions concentration. When the molarity of dopant erbium ions is close to 2 0%, the relative intensities of anti Stokes PL spectra are dominant. From the XRD and SEM micrograph, the Y 2O 3:Er 3+ nanocrystal with cubic structure is verified and the distribution of particles size is homogeneous. The experimental results indicate that the anti Stokes emission results from two photon absorption process in the Y 2O 3:Er 3+ nanocrystal system.

关 键 词：氧化钇纳米晶 双光子吸收 均相沉积法 铒离子掺杂 离子浓度 

分 类 号：O734[理学—晶体学]