Document Detail


Synthesis and characterization of dimensionally ordered semiconductor nanowires within mesoporous silica.
MedLine Citation:
PMID:  11459479     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Semiconductor nanowires of silicon have been synthesized within the pores of mesoporous silica using a novel supercritical fluid solution-phase approach. Mesoporous silica, formed by the hydrolysis of tetramethoxysilane (TMOS) in the presence of a triblock copolymer surfactant, was employed for the nucleation and growth of quantum-confined nanowires. The filling of the silica mesopores with crystalline silicon and the anchoring of these nanowires to the sides of the pores were confirmed by several techniques including electron microscopy, powder X-ray diffraction, 29Si magic angle spinning nuclear magnetic resonance, infrared spectroscopy, and X-ray fluorescence. Effectively, the silica matrix provides a means of producing a high density of stable, well-ordered arrays of semiconductor nanowires in a low dielectric medium. The ordered arrays of silicon nanowires also exhibited discrete electronic and photoluminescence transitions that could be exploited in a number of applications, including nanodevices and interconnects.
Authors:
N R Coleman; N O'Sullivan; K M Ryan; T A Crowley; M A Morris; T R Spalding; D C Steytler; J D Holmes
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of the American Chemical Society     Volume:  123     ISSN:  0002-7863     ISO Abbreviation:  J. Am. Chem. Soc.     Publication Date:  2001 Jul 
Date Detail:
Created Date:  2001-07-18     Completed Date:  2001-12-04     Revised Date:  2003-10-31    
Medline Journal Info:
Nlm Unique ID:  7503056     Medline TA:  J Am Chem Soc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  7010-6     Citation Subset:  -    
Affiliation:
Department of Chemistry and Supercritical Fluid Centre, University College Cork, Cork, Ireland.
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