Abstract: One-dimensional CaTiO3∶Er3+ microbelts have been prepared by electrospinning method. X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, scanning electron microscopy(SEM), transmission electron microscopy(TEM), high-resolution transmission electron microscopy(HRTEM), up-converted luminescence were used to characterize the resulting samples. SEM and TEM analysis indicate that the obtained precursor belts have a uniform size, and the as-formed microbelts consist of nanoparticles. Under 980 nm laser beam excitation, the CaTiO3∶Er3+ samples exhibit a green emission band with a maximum at 546 nm originating from the 4S3/2→4I15/2 transitions of Er3+ ions. When the Er3+ concentration increases, the red emission of CaTiO3∶Er3+ increases relative to the green emission, which is due to the energy transfer between Er3+ ions.

Key words: upconversion, electrospinning, microbelts, erbium