Hydrothermal synthesis and photoluminescence properties of SrCO3

Well-crystallized strontium carbonate (SrCO3) nanoparticles were successfully synthesized by a simple hydrothermal method. The products were characterized by X-ray diffraction (XRD), which is in good agreement with orthorhombic SrCO3. Raman spectrum is in accordance with its crystal structure. Field emission scanning electron microscopy (FE-SEM) characterization indicates that the as-synthesized SrCO3. nanoparticles are of mean size about 80 nm. The band gap of SrCO3 was estimated by Wood and Tauc method through UV-visible reflection spectrum, showing a band gap value of 3.17 eV (391 nm). The photoluminescence properties of the as-synthesized SrCO3 were measured at room temperature, which shows excellent emissions with two emission centers ranging from ultraviolet to red. The ultraviolet emission center locates at 390 nm, and the green emission center locates at 523 nm, respectively. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.