Effects of gold catalysts and thermal evaporation method modifications on the growth process of Zn{sub 1-x}Mg{sub x}O nanowires

Journal Article · Thu Jul 15 00:00:00 EDT 2010 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2010.05.007· OSTI ID:21421569

Yousefi, Ramin ^[1]; Muhamad, Muhamad Rasat ^[1]

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1. Solid State Laboratory, Department of Physics, University of Malaya, 50603 Kuala Lumpur (Malaysia)

In this paper, we investigate the roles of gold catalysts and thermal evaporation method modifications in the growth process of Zn{sub 1-x}Mg{sub x}O nanowires. Zn{sub 1-x}Mg{sub x}O nanowires are fabricated on silicon substrates with and without using a gold catalyst. Characterizations reveal that Mg acts in a self-catalyst role during the growth process of Zn{sub 1-x}Mg{sub x}O nanowires grown on catalyst-free substrate. The optical properties and crystalline quality of the Zn{sub 1-x}Mg{sub x}O nanowires are characterized by room temperature photoluminescence (PL) measurements and Raman spectroscopy, respectively. The Raman and PL studies demonstrate that the Zn{sub 1-x}Mg{sub x}O nanowires grown using the catalyst-free method have good crystallinity with excellent optical properties and have a larger band-gap in comparison to those grown with the assistance of gold. - Graphical abstract: ZnMgO nanowires can be formed with and without gold catalyst by a modified thermal evaporation method.

• OSTI ID: 21421569
• Journal Information: Journal of Solid State Chemistry, Vol. 183, Issue 7; Other Information: DOI: 10.1016/j.jssc.2010.05.007; PII: S0022-4596(10)00196-9; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CATALYSTS
CRYSTAL GROWTH
EVAPORATION
GOLD
MAGNESIUM COMPOUNDS
OPTICAL PROPERTIES
OXIDES
PHOTOLUMINESCENCE
QUANTUM WIRES
RAMAN SPECTROSCOPY
SILICON
TEMPERATURE RANGE 0273-0400 K
ZINC COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
ELEMENTS
EMISSION
LASER SPECTROSCOPY
LUMINESCENCE
METALS
NANOSTRUCTURES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHOTON EMISSION
PHYSICAL PROPERTIES
SEMIMETALS
SPECTROSCOPY
TEMPERATURE RANGE
TRANSITION ELEMENTS