Solvothermal preparetion and near-infrared fluorescence of BaSnO3 nanoparticles

BaSnO3 nano-phosphors were prepared by solvothermal method using glycol-water mixed solution as a solvent, followed by calcinations at different temperature. The as-synthesized samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), the nano-particle size analyzer, UV-Vis-NIR spectrophotometer, excitation and emission spectra. The nano-powders are sphere with sizes of 30~50 nm. Good dispersity can be achieved even after the sample was calcined. Efficient near-infrared fluorescence with emission peak of 895 nm was observed under the excitation of 385 nm. Comparing with the sample prepared by solid state reaction, the emission intensities increase about ten folds. The degree of crystallization is found to be the main fact of the near-infrared fluorescence of BaSnO3 nanoparticles.