Abstract
ZnO and Zn0.98Mg0.02O nanowires have been grown by high-pressure pulsed laser deposition on sapphire substrates covered with gold colloidal particles as nucleation sites. We present a detailed study of the nanowire size and length distribution and of the growth evolution. We find that the aspect ratio varies linearly with deposition time. The linearity coefficient is independent of the catalytic gold particle size and lateral nanowire density. The superior structural quality of the whiskers is proven by X-ray diffraction and transmission electron microscopy. The defect-free ZnO nanowires exhibit a FWHM(2θ-ω) of the ZnO(0002) reflection of 22 arcsec. We show (0–11) step habit planes on the side faces of the nanowires that are a few atomic steps in height. The microscopic homogeneity of the optical properties is confirmed by temperature-dependent cathodoluminescence.
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Rahm, A. et al. (2008). Growth Evolution and Characterization of PLD Zn(Mg)O Nanowire Arrays. In: Advances in Solid State Physics. Advances in Solid State Physics, vol 46. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-38235-5_9
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DOI: https://doi.org/10.1007/978-3-540-38235-5_9
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