Luminescent Properties and Energy Transfer Mechanism of Gd^(3+) and Eu^(2+) Co-doped Phosphate Glasses

作     者：Qian Wang Shao-Ye Ouyang Wei-Huan Zhang Bin Yang Yue-Pin Zhang Hai-Ping Xia 

作者机构：Key Laboratory of Photo-Electronic MaterialNingbo University 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2015年第28卷第4期

页      面：487-491页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：financially supported by the National Natural Science Foundation of China (Nos.61275180 and 51472125) the Natural Science Foundation of Ningbo City (No.2013A610126) the Outstanding Dissertation Growth Foundation of Ningbo University (No.PY2013009) the K.C.Wong Magna Fund in Ningbo University 

主　　题：Europium oxide Phosphate glass Luminescent properties Energy transfer Inokuti-Hirayama's model 

摘      要：The phosphate glasses doped with Eu2＋, Gd3＋, respectively, and co-doped with Gd3＋ and Eu2＋ were prepared by high-temperature melting method. The transmission spectra, the excitation spectra, the emission spectra and the fluorescent decay time were investigated. The energy transfer process between Gd3＋ and Eu2＋ was studied. From the excitation spectra and the emission spectra of the phosphate glasses doped with Eu2＋, we observed that the emission intensity of Eu2＋ shows higher for 0.02 mol% Eu2＋-doped phosphate glass. According to the excitation spectra and the emission spectra and the fluorescence decay curves, when the concentration of Eu2＋ was 0.02 mol%, the optimal con- centration of Gd3＋ was 0.3 tool%. Based on Dexter theory, it is shown that the energy transfer between Gd3＋ and Eu2＋ was nonradiation energy transfer by analyzing the energy-level diagram. The fluorescence decay curves of Gd3＋ were expressed by the Inokuti-Hirayama＇s model and were used to analyze energy transfer mechanism between Gd3＋ and Eu2＋. And the energy transfer efficiency was also calculated.