Synthesis and luminescence properties of rare earth doped Na3AlP3O9N oxynitridophosphate phosphor
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ZnO nanostructures were prepared using a Zn metal source by the thermal evaporation process. The shapes of the ZnOnanostructures were changed depending on pressures and distances from the metal source in a tube furnace. One-dimensionalnanowires with high crystallinity and density at an ambient atmospheric pressure were formed, while three-dimensionalhollow structures resulted at low pressure. The influence of the pressure and distance from the metal source were evaluatedby the SEM, XRD and TEM. The defect emission peaks originated from the remaining Zn metal and oxygen partial pressurewere investigated by a photoluminescence (PL) analysis. The relationship between the nanostructural change and differentpressures (or remaining Zn metal) is also explained.
Abstract
ZnO nanostructures were prepared using a Zn metal source by the thermal evaporation process. The shapes of the ZnOnanostructures were changed depending on pressures and distances from the metal source in a tube furnace. One-dimensionalnanowires with high crystallinity and density at an ambient atmospheric pressure were formed, while three-dimensionalhollow structures resulted at low pressure. The influence of the pressure and distance from the metal source were evaluatedby the SEM, XRD and TEM. The defect emission peaks originated from the remaining Zn metal and oxygen partial pressurewere investigated by a photoluminescence (PL) analysis. The relationship between the nanostructural change and differentpressures (or remaining Zn metal) is also explained.