Journal
JOURNAL OF CRYSTAL GROWTH
Volume 268, Issue 3-4, Pages 531-535Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jcrysgro.2004.04.086
Keywords
nanostructures; pulsed laser deposition; alloys; oxides; semiconducting II-VI materials
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ZnO band-gap was engineered for and by growing its quantum wells and nanoparticle matrices using pulsed laser deposition. Alloy thin films of MgxZn1-xO grown with high crystalline quality by variable oxygen ambient pressure methodology developed by us could continuously increase the band gap up to about 3.8 eV. Increasing Cd concentration in the alloy thin films of CdyZn1-yO grown with good crystalline quality monotonically decreased the band gap up to about 2.9 eV. Multilayer matrices of alumina capped ZnO natioparticles with mean radii in the range of 1.8-3.6 nm were grown to obtain size-dependent band gap up to about 4.5 eV. These nanoparticles are understood to grow without the formation of a wetting layer on the substrate. (C) 2004 Elsevier B.V. All rights reserved.
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