Non-catalytic growth of high aspect-ratio ZnO nanowires by thermal evaporation

A. Umar; E. K. Suh; Y. B. Hahn

doi:10.1016/j.ssc.2006.07.014

Non-catalytic growth of high aspect-ratio ZnO nanowires by thermal evaporation

A. Umar, E. K. Suh, Y. B. Hahn

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

50 Citations (Scopus)

Abstract

High-density and high aspect-ratio ZnO nanowires were grown on Si(100) substrates by the thermal evaporation of metallic zinc powder without the use of metal catalysts or additives. The as-grown nanowires had diameters in the range of 60-100 nm with lengths 5-15 μm. Detailed structural characterization indicated that the obtained nanowires are single-crystalline with a perfect hexagonal facet and surfaces. The room temperature PL spectrum exhibited strong UV emission, affirming that the as-grown products have good optical properties. The possible growth mechanism for the formation of hexagonal-faceted and perfect surface ZnO nanowires is also discussed.

Original language	English
Pages (from-to)	447-451
Number of pages	5
Journal	Solid State Communications
Volume	139
Issue number	9
DOIs	https://doi.org/10.1016/j.ssc.2006.07.014
Publication status	Published - Sept 2006

Keywords

A. ZnO nanowires
B. Thermal evaporation
C. Scanning and transmission electron microscopy
D. Structural and optical properties

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10.1016/j.ssc.2006.07.014

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title = "Non-catalytic growth of high aspect-ratio ZnO nanowires by thermal evaporation",

abstract = "High-density and high aspect-ratio ZnO nanowires were grown on Si(100) substrates by the thermal evaporation of metallic zinc powder without the use of metal catalysts or additives. The as-grown nanowires had diameters in the range of 60-100 nm with lengths 5-15 μm. Detailed structural characterization indicated that the obtained nanowires are single-crystalline with a perfect hexagonal facet and surfaces. The room temperature PL spectrum exhibited strong UV emission, affirming that the as-grown products have good optical properties. The possible growth mechanism for the formation of hexagonal-faceted and perfect surface ZnO nanowires is also discussed.",

keywords = "A. ZnO nanowires, B. Thermal evaporation, C. Scanning and transmission electron microscopy, D. Structural and optical properties",

author = "A. Umar and Suh, {E. K.} and Hahn, {Y. B.}",

note = "Funding Information: This work was supported by the Basic Research Program of the Korea Science and Engineering Foundation (R01-2006-000-4306-0). One of the authors, Ahmad Umar, is grateful to the Korea Research Foundation (KRF) for its graduate research fellowship program.",

year = "2006",

month = sep,

doi = "10.1016/j.ssc.2006.07.014",

language = "English",

volume = "139",

pages = "447--451",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Ltd",

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T1 - Non-catalytic growth of high aspect-ratio ZnO nanowires by thermal evaporation

AU - Umar, A.

AU - Suh, E. K.

AU - Hahn, Y. B.

N1 - Funding Information: This work was supported by the Basic Research Program of the Korea Science and Engineering Foundation (R01-2006-000-4306-0). One of the authors, Ahmad Umar, is grateful to the Korea Research Foundation (KRF) for its graduate research fellowship program.

PY - 2006/9

Y1 - 2006/9

N2 - High-density and high aspect-ratio ZnO nanowires were grown on Si(100) substrates by the thermal evaporation of metallic zinc powder without the use of metal catalysts or additives. The as-grown nanowires had diameters in the range of 60-100 nm with lengths 5-15 μm. Detailed structural characterization indicated that the obtained nanowires are single-crystalline with a perfect hexagonal facet and surfaces. The room temperature PL spectrum exhibited strong UV emission, affirming that the as-grown products have good optical properties. The possible growth mechanism for the formation of hexagonal-faceted and perfect surface ZnO nanowires is also discussed.

AB - High-density and high aspect-ratio ZnO nanowires were grown on Si(100) substrates by the thermal evaporation of metallic zinc powder without the use of metal catalysts or additives. The as-grown nanowires had diameters in the range of 60-100 nm with lengths 5-15 μm. Detailed structural characterization indicated that the obtained nanowires are single-crystalline with a perfect hexagonal facet and surfaces. The room temperature PL spectrum exhibited strong UV emission, affirming that the as-grown products have good optical properties. The possible growth mechanism for the formation of hexagonal-faceted and perfect surface ZnO nanowires is also discussed.

KW - A. ZnO nanowires

KW - B. Thermal evaporation

KW - C. Scanning and transmission electron microscopy

KW - D. Structural and optical properties

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U2 - 10.1016/j.ssc.2006.07.014

DO - 10.1016/j.ssc.2006.07.014

M3 - Article

AN - SCOPUS:33746798083

SN - 0038-1098

VL - 139

SP - 447

EP - 451

JO - Solid State Communications

JF - Solid State Communications

IS - 9

ER -

Non-catalytic growth of high aspect-ratio ZnO nanowires by thermal evaporation

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Keywords

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