Synthesis and characterisation of zinc oxide tetrapod nanocrystals

Newton, Marcus, Firth, Steven, Matsuura, Takashi and Warburton, P.A. (2006) Synthesis and characterisation of zinc oxide tetrapod nanocrystals. Journal of Physics: Conference Series, 26, 251 - 255. (doi:10.1088/1742-6596/26/1/060).

Record type: Article

Abstract

Zinc oxide is an important group II-VI semiconductor material with optical properties that permit stable- emission at room temperature. We report on the synthesis of highly uniform nanocrystalline ZnO tetrapod (ZnO-T) nanostructures through a modified chemical vapour transport process. These self assembled nanocrystals are characterised by four cylindrical arms with a hexagonal facet all of which are joined at a tetrahedral core. Studies are carried out on ZnO tetrapods using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), photoluminescence spectroscopy (PLS) and Raman measurements. We find a simple technique to quench visible emission found in ZnO tetrapods as grown. We also observe Raman active modes suggesting that nitrogen is incorporated within our samples.

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