Uninterrupted and reusable source for the controlled growth of nanowires

Sugavaneshwar, RP and Nanda, Karuna Kar (2013) Uninterrupted and reusable source for the controlled growth of nanowires. In: SCIENTIFIC REPORTS, 3 .

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Abstract

Generally, the length of the oxide nanowires grown by vapor phase transport is limited by the degradation of the source materials. Furthermore, the source material is used once for the nanowires growth. By exploiting the Si-Zn phase diagram, we have developed a simple methodology for the non-catalytic growth of ultralong ZnO nanowires in large area with controllable aspect ratio and branched structures. The insolubility of Zn in Si and the use of a Si cap on the Zn source to prevent local source oxidation of Zn (i.e. prevents the degradation of the source) are the keys to grow longer nanowires without limitations. It has been shown that the aspect ratio can be controlled by thermodynamically (temperature) and more importantly by kinetically (vapor flux). One of the interesting findings is that the same source material can be used for several depositions of oxide nanostructured materials.

Item Type:	Journal Article
Publication:	SCIENTIFIC REPORTS
Publisher:	NATURE PUBLISHING GROUP
Additional Information:	Copyright for this article belongs to NATURE PUBLISHING GROUP, ENGLAND
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	18 Mar 2013 05:35
Last Modified:	18 Mar 2013 05:35
URI:	http://eprints.iisc.ac.in/id/eprint/46063

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