Abstract
We report here a simple wet chemical method to fabricate ZnO nanodiscs. Growth of the nanodiscs occurs at room temperature (35°C) in the reaction between zinc chloride and sodium hydroxide of predetermined concentration. The nanodiscs were structurally characterized using field emission scanning electron microscopy and X-ray diffraction. The diameters of the nanodiscs vary between 300nm and 500nm. X-ray diffraction data revealed that the unit cell of the nanodiscs is hexagonal. Room temperature photoluminescence was used to study the optical emission property of the nanodiscs. The nanodiscs exhibit strong PL emission peaked at ∼420nm. This singular violet emission from ZnO nanodiscs is a very interesting and rare finding. The PL emission at 420nm arises due to recombination of electron at zinc interstitials and holes in the valence band.
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