Synthesis and upconversion luminescence properties of YF3:Yb3+/Er3+ hollow nanofibers derived from Y2O3:Yb3+/Er3+ hollow nanofibers
Synthesis and upconversion luminescence properties of YF3:Yb3+/Er3+ hollow nanofibers derived from Y2O3:Yb3+/Er3+ hollow nanofibers
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DOI：
10.1007/s11051-013-1704-4
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发表时间：
2013-05-31
影响因子：
2.5
通讯作者：
Liu, Guixia
中科院分区：
文献类型：
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作者：
Li, Dan;Dong, Xiangting;Liu, Guixia
通过对Y2 O3：Yb 3 +/Er 3+中空纳米纤维的掺杂，成功制备了YF 3：Yb 3 +/Er 3+中空纳米纤维。采用静电纺丝法制备了PVP/[Y（NO3）3？Yb（NO3）3？Er（NO3）（3）]复合纳米纤维。采用X射线衍射、扫描电镜、透射电镜、荧光光谱等分析手段对产物的形貌和性能进行了研究。YF3：Yb-3+/Er-3？空心纳米纤维为纯正交晶系，空间群为Pnma，为空心结构，平均直径为174 ± 22 nm，由尺寸在30-60 nm的纳米颗粒组成。上转换发射光谱分析表明，YF 3：Yb 3+/Er 3+中空纳米纤维分别在523、545和654 nm处发出强的绿色和弱的红色上转换发射。绿色和红色发射分别来自Er 3？离子。在CIE色度坐标图中，YF 3：Yb 3 +/Er 3+空心纳米纤维的发光颜色位于绿色区域。该制备技术可应用于其他稀土氟化物上转换发光中空纳米纤维的制备。
YF3: Yb3+/Er3+ hollow nanofibers were successfully fabricated via fluorination of the relevant Y2O3: Yb 3?/Er3+ hollow nanofibers whichwere obtained by calcining the electrospun PVP/[Y(NO3) 3 ? Yb (NO3)(3) ? Er(NO3)(3)] composite nanofibers. The morphology and properties of the products were investigated in detail by X- ray diffraction, scanning electron microscope, transmission electron microscope, and fluorescence spectrometer. YF3: Yb-3+/Er-3? hollow nanofibers were pure orthorhombic phase with space group Pnma and were hollow- centered structure with mean diameter of 174 +/- 22 nm, and YF3: Yb3+/Er3+ hollow nanofibers are composed of nanoparticles with size in the range of 30-60 nm. Upconversion emission spectrum analysis manifested that YF3: Yb 3+/Er3+ hollow nanofibers emitted strong green and weak red upconversion emissions centering at 523, 545, and 654 nm, respectively. The green and red emissions were, respectively, originated from H-2(11/2)/(4) S-3/2 -> I-4(15/2) and F-4(9/2)+-> (4)Il(5/2) energy levels transitions of theEr 3? ions. Moreover, the emitting colors of YF3: Yb3+/Er3+ hollow nanofibers were located in the green region in CIE chromaticity coordinates diagram. This preparation technique could be applied to prepare other rare earth fluoride upconversion luminescence hollow nanofibers.