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Growth and Properties of ZnO/Zn1−x Mg x O Core/Shell Nanoparticles

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Abstract:

ZnO/Zn0.9Mg0.1O core/shell nanoparticles have been grown by employing metal cupferronate complex as precursors in organic solvents. ZnO cores are grown by quickly injecting their precursor at 250 °C while the shells are performed by slowly injecting their precursors at different temperatures. The grown nanoparticles are characterized by X-ray diffraction, photoluminescence microscopy, and transmission electron microscopy. The effects of the shell growth temperatures and precursor injecting rate are studied. Zn0.9Mg0.1O shells can epitaxially grow on ZnO cores when the shell growth temperature is lowered to 200 °C and the shell precursor is supplied slowly at a rate of 0.1 mmol/h. Increaseing shell supply rate or shell growth temperature results in homogenous growth of Zn0.9Mg0.1O nanoparticles. The shell growth can dramatically enhance core emission and cause a red shift on the core band edge emission.

Keywords: EPITAXIALLY GROWTH; GROWTH TEMPERATURE; PHOTOLUMINESCENCE ENHANCEMENT; PRECURSOR SUPPLY RATE; ZNO/ZN0.9MG0.1O CORE/SHELL NANOPARTICLES

Document Type: Research Article

DOI: https://doi.org/10.1166/jnn.2011.5222

Publication date: 2011-11-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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