采用溶胶-凝胶法结合静电纺丝技术制备了柔性Eu3+掺杂SiO2纤维薄膜,采用SEM、XRD、FT-IR、TG和PL等测试方法对材料进行表征。Eu3+掺杂SiO2纤维薄膜在热处理后纤维直径变小,纤维表面平滑无粘连。通过控制升温速度,纤维薄膜经热处理后仍具有较高的力学强度,750℃热处理后其拉伸强度可达4.31 MPa,经过多次弯曲仍能保持原样。在392.6 nm光源激发下, Eu3+掺杂SiO2纤维薄膜在570~670 nm附近呈现出来自于5D0→7FJ的发射峰。当Eu3+掺杂浓度为8mol%时,经过750℃热处理后Eu3+掺杂SiO2纤维薄膜的发光强度达到最大值。
Eu3+ doped SiO2 fibrous membranes were prepared by Sol-Gel and electrospinning methods. The obtained samples were chacterized by SEM, XRD, FT-IR, TG, PL,etc. By heat-treatment, the organic components were re-moved slowly and the diameters of the Eu3+ doped SiO2 fibers decreased. SEM images exhibit that the surface of the fibers retains smooth and uniform after heat-treatment. By controlling the heating rate, the Eu3+ doped SiO2 fibrous membranes present relatively high tensile strength at about 4.31 MPa after heat-treatment at 750℃. The samples ex-hibit no cracks after bending and recovering process. By excited by 392.6 nm light, the emission peaks between 570-670 nm are observed, which attributes to the5D0→7FJtransition. The strongest emission peak situates at 616 nm results from Eu3+5D0→7F2 transition. The optimal heat-treatment temperature is 750℃. PL spectra also show that the luminescence intensity attains the highest value at the concentration of 8mol% Eu3+doped.
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