Eu(DBM)_3Phen掺杂聚甲基丙烯酸甲酯静电纺丝荧光纤维  

Eu(DBM)_3Phen Doped Poly Methyl Methacrylate Electrospun Fluorescence Fibers

作　　者：李月[1] 张海浜 张晶晶[1] 赵昕[1] 林海[1] 

机构地区：[1]大连工业大学纺织与材料工程学院,辽宁大连116034

出　　处：《发光学报》2017年第9期1136-1142,共7页Chinese Journal of Luminescence

基　　金：国家自然科学基金(61275057)资助项目~~

摘　　要：通过静电纺丝技术获得直径约为700 nm,均匀且随机取向的亚微米级Eu(DBM)3Phen/PMMA纤维。在紫外光辐射下,亚微米级荧光纤维发出明亮的红色荧光。其激发光谱表明,荧光纤维有效激发波长范围为200~400 nm。利用积分球配以CCD探测器,在367 nm长波紫外LED激发下对荧光纤维开展绝对光谱功率测试。当LED泵浦功率为535.76#W时,厚度80#m的Eu(DBM)3Phen/PMMA纤维薄层对紫外辐射的吸收率高达89%,350~850 nm范围内发射的总绝对光谱功率、总光子数和总荧光量子产率分别为36.56#W、11.46×10^(13)cps和12.94%。亚微米级Eu(DBM)_3Phen/PMMA纤维薄层中,Eu^(3+)较高的跃迁发射几率及较大的发射截面使得纤维可以高效吸收紫外辐射并转变为可见光,在提高太阳能电池光电转换效率方面具有潜在应用价值。Eu（ DBM）3Phen/PMMA fibers with uniform and random orientation were obtained by electrospinning method. The diameter of the fiber is about 700 nm assigned to submicron. Under ultraviolet irradiation,the submicron fluorescent fiber emits bright red fluorescence,and its excitation spectrum shows that the effective excitation wavelength is 200-400 nm. The absolute spectral power was carried out by using an integrating sphere with a CCD detector at 367 nm UVA-LED. When the power of LED pump is 535. 76 μW,Eu（ DBM）3Phen/PMMA thin fiber layer with 80 μm is up to89% in ultraviolet absorbing,and the total absolute spectral power,emission photon number and fluorescence quantum yield in the range of 350-850 nm are 36. 56 μW,11. 46 ×10^13 cps and12. 94%,respectively. The higher transition probability and emission cross-section of Eu^3＋ allow the fiber to absorb ultraviolet radiation effectively and convert it into visible light,therefore submicron Eu-（ DBM）3Phen/PMMA thin fiber layer has great application prospects in the improvement of solar cell conversion efficiency.

关 键 词：Eu(DBM)3Phen/PMMA纤维 静电纺丝 绝对光谱参数 荧光量子产率 

分 类 号：TQ342.8[化学工程—化纤工业] O433[机械工程—光学工程]