Luminescent Properties and Energy Transfer Mechanism of Gd3+ and Eu2+ Co-doped Phosphate Glasses
来源期刊：Acta Metallurgica Sinica2015年第4期
论文作者：Qian Wang Shao-Ye Ouyang Wei-Huan Zhang Bin Yang Yue-Pin Zhang Hai-Ping Xia
文章页码：487 - 491
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 concentration of Gd3+was 0.3 mol%.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.
Qian Wang，Shao-Ye Ouyang，Wei-Huan Zhang，Bin Yang，Yue-Pin Zhang，Hai-Ping Xia
Key Laboratory of Photo-Electronic Material,Ningbo University
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 concentration of Gd3+was 0.3 mol%.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.
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