Synthesis and luminescent properties of CaTiO3: Pr3+ microfibers prepared by electrospinning method

One-dimensional Pr3+-doped CaTiO3 microfibers were fabricated by a simple and cost-effective electronspinning process. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric and differential analysis (TG-DTA), scanning electron microscopy (SEM), energy-dispersive X-ray spectrum (EDS), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), photoluminescence (PL), quantum efficiency (QE), and cathodoluminescence (CL) spectra as well as kinetic decays were used to characterize the samples. Under ultraviolet excitation and low-voltage electron beams (1-3 kV) excitation, the CaTiO3: x Pr3+ samples show the red emission at 612 nm, corresponding to D-1(2)-H-3(4) transition of Pr3+. The luminescence intensity, quantum efficiency, and the lifetime have been studied as a function of the doping concentration of Pr3+ in the CaTiO3 samples. (C) 2010 Optical Society of America