Synthesis of Gallium Oxide Nanostructures and Their Structural Properties

Various β-Ga2O3 nanostructures were synthesized by using a thermal evaporation process with Ga or Ga2O3 powders as the source materials. Through a systematic control of the processing temperature and the reaction time we obtained various types of nanostructures, such as nanowires, nanoribbons, and nanosheets, of β-Ga2O3. The formation of the nanostructures into different shapes could be explained by using the vapor-liquid-solid (VLS) and the vapor-solid (VS) mechanisms. Xray diffraction analysis and transmission electron microscopy analysis indicated that the β-Ga2O3 nanostructures were single crystals with a monoclinic crystal structure.