Terbium-doped lanthanum oxide (La_2O_3:Tb~3) nanofibers were prepared by electrospinning followed by calcination at high temperature. Thermogravimetric analyzer (TGA), field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and photoluminescence (PL) were used to characterize the obtained fibers. The results reveal that the nanofibers have an average diameter of ca. 95±25 nm and are composed of pure La_2O_3 phase. Under the excitation of 274 nm light, the La_2O_3:Tb~3 nanofibers exhibit the characteristic emission resulting from the ~5D_4→~7F_J (J=3, 4, 5, 6) transitions of Tb~3 ions. And the PL emission intensity is stronger than that of their nanoparticle counterparts.
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