Er^(3+)/Y^(3+)/Yb^(3+)共掺杂氧化铝光致发光增强研究  

Investigation on enhanced photoluminescence of Er^(3+)/Y^(3+)/Yb^(3+) co-doped alumina powders

作　　者：詹晓丽[1] 俞建长[1] 黄清明[1] 

机构地区：[1]福州大学材料科学与工程学院,福建福州350108

出　　处：《福州大学学报（自然科学版）》2012年第4期531-534,共4页Journal of Fuzhou University(Natural Science Edition)

基　　金：福建省自然科学基金资助项目(2008J0146)

摘　　要：采用sol-gel法制备了不同摩尔比例的Er3+/Y3+/Yb3+共掺杂Al2O3粉末.X射线衍射(XRD)结果表明各样品均以δ-Al2O3为主相.利用荧光光谱仪测试各样品的光致发光(PL)谱,结果表明Y3+的共掺杂明显的提高了Er3+的PL强度.Er3+/Y3+/Yb3+共掺杂Al2O3粉末的PL强度随着Yb3+浓度呈先增大后减小的变化,Er3+∶Y3+∶Yb3+的摩尔比例为1∶20∶10时,样品的PL强度在Y3+共掺杂的Er3+∶Al2O3粉末的PL强度提高了7倍的基础上进一步提高了近4倍,说明Er3+/Y3+/Yb3+的共掺杂能够更有效地提高Er3+的PL强度.The different molar ratio of Er^3 ＋/Y^3 ＋/Yb^3 ＋ co - doped Al2O3 powders have been prepared by sol - gel method. X - ray diffraction （XRD） results show that primary phase of the samples is 8 - Al2O3. The photoluminescence（PL） spectra is obtained by fluorescence spectrometer show that the PL intensity for Er3 ＋ by Y3 ＋ co - doping is significantly enhanced. The PL intensity of Er3 ＋/Y3＋/Yb3, co -doped Al2O3 powders is increased at first and then decreased with the increase of Y3＋ co -doping concentration. When the molar ratio of Yb3＋ and Er3＋ is 1： 10, the intensity of sample is further improved by about 4 times on the basis of the intensity of Er3＋ - doped Al2O3 powders increased by 7 times with Y3 ＋ co-doping. The results show that the intensity Er3 ＋ is more effectively enhanced by Er3 ＋/Y3 ＋/Yb3 ＋ co - doping.

关 键 词：共掺杂 氧化铝 溶胶-凝胶 光致发光 

分 类 号：TB321[一般工业技术—材料科学与工程]