Novel low temperature route for large scale synthesis of ZnO quantum dots

Hesham M.A. Soliman, Robina Shahid, Marwa Fathy and Mamoun Muhammed

International Journal of Sciences, 2012, vol. 1, issue 12, 153-161

Abstract: A simple and fast method has been developed for the synthesis of zinc oxide quantum dots (QDs) with an average size of 3-4 nm. Zinc ions were chemically reduced to give thermodynamically unstable zinc particles, which were immediately oxidized to release thermodynamically stable zinc oxide nanopowder through a fast reduction/oxidation process. XRD and SAED analysis confirm the hexagonal wurtzite phase of ZnO. The UV-Vis absorption of ZnO QDs show quantum confinement effect in UV-Vis absorption and photoluminescence (PL) spectra.

Keywords: ZnO; Quantum Dots; reduction; oxidation; TEM; Optical properties (search for similar items in EconPapers)
Date: 2012
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