Solution growth and cathodoluminescence of novel SnO₂ core-shell homogeneous microspheres

Large-scale novel core-shell microspheres of SnO₂ have been synthesized through a simple solution method at 200 °C. Morphologies, microstructures, and compositions of the products are investigated by X-ray powder diffraction, Raman spectroscopy, scanning electron microscopy, and transmission electron microscopy. Results indicate that the SnO₂ microspheres are core-shell structures with an average diameter of 6 μm and an average shell thickness of 200 nm. A growth mechanism and the cathodoluminescence properties of these novel structures are presented.