Eu3＋掺杂的SiO2-NaF-YAG系氟氧化物玻璃的荧光性能研究

采用传统工艺方法制备以YAG：Eu3和Eu2 O3两种方式掺杂Eu3＋的系列SiO2-NaF-YAG系氟氧化物玻璃.研究Eu3＋离子浓度对玻璃发光强度的影响；采用XRD、红外光谱和荧光光谱研究Eu3＋离子掺杂的玻璃的结构和发光性能.XRD谱表明样品为非晶态玻璃；红外光谱的研究结果表明：玻璃是以硅氧四面体网络结构为主；发射光谱研究结果表明：发射峰来自于Eu3＋的5D0→7F0、5 D0→7F1和5D0→F2跃迁,614 nm处的特征发射峰最强.YAG∶Eu3＋形式掺杂的玻璃的发光性能较好,且Eu3＋周围的晶格场环境具有较高的对称性.在掺杂浓度0.15％ ～1.0％范围内没有发生浓度淬灭现象.

Luminescence Properties of Eu3+ Doped SiO2-NaF-YAG System Oxyfluoride Glass

Eu3 ＋ doped SiO2-NaF-YAG oxyfluoride glasses with YAG：Eu3＋ and Eu20 as dopant were prepared by a traditional glass melting method. The effect of Eu3＋ concentration on the emission intensity was studied. The structure and the luminescence of Eu3＋ doped glasses were characterized by XRD, FTIR spectra and fluorescence spectra. The results of XRD exhibit that the samples are amorphous. The results of FTIR spectra show that the glasses are silicon-oxygen tetrahedron structure; the results of luminescence spectra show that the emission peaks are from 5D0→7F0,5D0→7F1 and 5D0→TF2 transition of Eu3＋ , re- spectively. The characteristic emission peak at 614 nm is the strongest. The luminescence property of glass with YAG ：Eu3＋ as dopant is better than the other, and the lattice field environment of the sample has higher symmetry. The concentration quenching does not occur when Eu3＋ concentration is in the range of up to 0. 15 % to 1.0 %