Effects of gold catalysts and thermal evaporation method modifications on the growth process of Zn1-xMgxO nanowires

Document Type

Article

Publication Date

1-1-2010

Abstract

In this paper, we investigate the roles of gold catalysts and thermal evaporation method modifications in the growth process of Zn1-xMgxO nanowires. Zn1-xMgxO 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 Zn1-xMgxO nanowires grown on catalyst-free substrate. The optical properties and crystalline quality of the Zn1-xMgxO nanowires are characterized by room temperature photoluminescence (PL) measurements and Raman spectroscopy, respectively. The Raman and PL studies demonstrate that the Zn1-xMgxO 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. (C) 2010 Elsevier Inc. All rights reserved.

Keywords

Zn1-xMgxO nanowires, Thermal evaporation, Fick's first law, Photoluminescence, Raman

Publication Title

Journal of Solid State Chemistry

Volume

183

Issue

7

Publisher

Academic Press Inc Elsevier Science

Publisher Location

525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA

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