Luminescence properties and energy transfer investigations of SrMgSi₂O₆:Ce,Tb phosphors

详细信息    查看全文

• 作者：Xiaoyan Fu^a ; Lijun Fang^b ; ^c ; Shuyun Niu^c ; Hongwu Zhang^b ; ^{hwzhang@iue.ac.cn} ; ^{hwzhang21st@hotmail.com}
• 关键词：Ce3+ ; Tb3+ ; Silicate ; Luminescence properties ; Energy transfer
• 刊名：Journal of Luminescence
• 出版年：2013
• 出版时间：October, 2013
• 年：2013
• 卷：142
• 期：Complete
• 页码：163-166
• 全文大小：959 K

文摘

A series of new luminescent phosphors SrMgSi₂O₆:Ce,Tb have been prepared by a solid state reaction method. The phase characterizations, luminescence emission and excitation spectra and optimum doping concentrations of the SrMgSi₂O₆:Ce,Tb phosphors are investigated in detail. The intense green emission monitored at 542 nm is realized in the SrMgSi₂O₆: Ce, Tb phosphors on the basis of the highly efficient energy transfer from Ce³⁺ to Tb³⁺. The energy transfer mechanism is ascribed to the dipole-dipole interaction. When the Tb³⁺ ion concentration was increased to 0.05, the transfer efficiency increased to 77 % . The critical distance of the energy transfer has been calculated by the concentration quenching method.