Aligned hexagonal coaxial-shaped ZnO nanocolumns on steel alloy by thermal evaporation

A. Umar; Y. B. Hahn

doi:10.1063/1.2200472

Aligned hexagonal coaxial-shaped ZnO nanocolumns on steel alloy by thermal evaporation

A. Umar, Y. B. Hahn

Department of Chemistry

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171 Citations (Scopus)

Abstract

Single-crystalline, hexagonal coaxial-shaped ZnO nanocolumns have been synthesized in a large quantity on steel alloy substrate via catalyst-free thermal evaporation of metallic zinc powder at 490 °C. The optical-phonon E2 mode at 437 cm-1 in Raman spectrum and a strong UV emission at 381 nm in photoluminescence spectrum showed that the synthesized ZnO nanocolumns have a good crystal quality, with a wurtzite hexagonal phase and exhibited a good optical property. A layer-by-layer three-step growth mechanism was proposed for the formation of hexagonal coaxial-shaped ZnO nanocolumns.

Original language	English
Article number	173120
Journal	Applied Physics Letters
Volume	88
Issue number	17
DOIs	https://doi.org/10.1063/1.2200472
Publication status	Published - 2006

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10.1063/1.2200472

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title = "Aligned hexagonal coaxial-shaped ZnO nanocolumns on steel alloy by thermal evaporation",

abstract = "Single-crystalline, hexagonal coaxial-shaped ZnO nanocolumns have been synthesized in a large quantity on steel alloy substrate via catalyst-free thermal evaporation of metallic zinc powder at 490 °C. The optical-phonon E2 mode at 437 cm-1 in Raman spectrum and a strong UV emission at 381 nm in photoluminescence spectrum showed that the synthesized ZnO nanocolumns have a good crystal quality, with a wurtzite hexagonal phase and exhibited a good optical property. A layer-by-layer three-step growth mechanism was proposed for the formation of hexagonal coaxial-shaped ZnO nanocolumns.",

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

note = "Funding Information: This work was supported by the Korea Research Foundation Grant (KRF-2005-005-J07502) funded by the Korean Government (MOEHRD). One of the authors (A.U.) is thankful to the Korea Research Foundation for its graduate research fellowship program.",

year = "2006",

doi = "10.1063/1.2200472",

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journal = "Applied Physics Letters",

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T1 - Aligned hexagonal coaxial-shaped ZnO nanocolumns on steel alloy by thermal evaporation

AU - Umar, A.

AU - Hahn, Y. B.

N1 - Funding Information: This work was supported by the Korea Research Foundation Grant (KRF-2005-005-J07502) funded by the Korean Government (MOEHRD). One of the authors (A.U.) is thankful to the Korea Research Foundation for its graduate research fellowship program.

PY - 2006

Y1 - 2006

N2 - Single-crystalline, hexagonal coaxial-shaped ZnO nanocolumns have been synthesized in a large quantity on steel alloy substrate via catalyst-free thermal evaporation of metallic zinc powder at 490 °C. The optical-phonon E2 mode at 437 cm-1 in Raman spectrum and a strong UV emission at 381 nm in photoluminescence spectrum showed that the synthesized ZnO nanocolumns have a good crystal quality, with a wurtzite hexagonal phase and exhibited a good optical property. A layer-by-layer three-step growth mechanism was proposed for the formation of hexagonal coaxial-shaped ZnO nanocolumns.

AB - Single-crystalline, hexagonal coaxial-shaped ZnO nanocolumns have been synthesized in a large quantity on steel alloy substrate via catalyst-free thermal evaporation of metallic zinc powder at 490 °C. The optical-phonon E2 mode at 437 cm-1 in Raman spectrum and a strong UV emission at 381 nm in photoluminescence spectrum showed that the synthesized ZnO nanocolumns have a good crystal quality, with a wurtzite hexagonal phase and exhibited a good optical property. A layer-by-layer three-step growth mechanism was proposed for the formation of hexagonal coaxial-shaped ZnO nanocolumns.

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VL - 88

JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Aligned hexagonal coaxial-shaped ZnO nanocolumns on steel alloy by thermal evaporation

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