Zinc oxide single-crystal microtubes

Jiping Cheng; Ruyan Guo; Qing Ming Wang

doi:10.1063/1.1825067

Zinc oxide single-crystal microtubes

Jiping Cheng, Ruyan Guo, Qing Ming Wang

Materials Research Institute (MRI)

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

85 Scopus citations

Abstract

ZnO single-crystal microtubes were fabricated using an encapsulated microwave growth method. The ZnO crystals are grown in hexagonal hollow tube form with a well faceted end and side surfaces, which have cross-sectional dimensions of 100 to 250 μm, lengths of 3-5 mm, and wall thickness of 1-2 μm. Under optical excitation, a strong near-band-edge emission was obtained at a peak wavelength of 377.8 nm with a full width at half maximum of 11 nm. The ZnO microtubes exhibited a highly selective UV light response with a cut-off wavelength at ∼370 nm, and excellent electron field emission properties with an emission current density of 11 mA/cm ²2 at an applied field of ∼20 V/μm.

Original language	English (US)
Article number	3
Pages (from-to)	5140-5142
Number of pages	3
Journal	Applied Physics Letters
Volume	85
Issue number	22
DOIs	https://doi.org/10.1063/1.1825067
State	Published - Nov 29 2004

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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title = "Zinc oxide single-crystal microtubes",

abstract = "ZnO single-crystal microtubes were fabricated using an encapsulated microwave growth method. The ZnO crystals are grown in hexagonal hollow tube form with a well faceted end and side surfaces, which have cross-sectional dimensions of 100 to 250 μm, lengths of 3-5 mm, and wall thickness of 1-2 μm. Under optical excitation, a strong near-band-edge emission was obtained at a peak wavelength of 377.8 nm with a full width at half maximum of 11 nm. The ZnO microtubes exhibited a highly selective UV light response with a cut-off wavelength at ∼370 nm, and excellent electron field emission properties with an emission current density of 11 mA/cm 22 at an applied field of ∼20 V/μm.",

author = "Jiping Cheng and Ruyan Guo and Wang, {Qing Ming}",

note = "Funding Information: The authors thank Dr. William White for the help with photoresponse measurements and Jeremy Acord for the PL measurements. This work was partly supported by the NSF under Grant No. DMI-0322286 and No. DMR-0075917. ",

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AU - Cheng, Jiping

AU - Guo, Ruyan

AU - Wang, Qing Ming

N1 - Funding Information: The authors thank Dr. William White for the help with photoresponse measurements and Jeremy Acord for the PL measurements. This work was partly supported by the NSF under Grant No. DMI-0322286 and No. DMR-0075917.

PY - 2004/11/29

Y1 - 2004/11/29

N2 - ZnO single-crystal microtubes were fabricated using an encapsulated microwave growth method. The ZnO crystals are grown in hexagonal hollow tube form with a well faceted end and side surfaces, which have cross-sectional dimensions of 100 to 250 μm, lengths of 3-5 mm, and wall thickness of 1-2 μm. Under optical excitation, a strong near-band-edge emission was obtained at a peak wavelength of 377.8 nm with a full width at half maximum of 11 nm. The ZnO microtubes exhibited a highly selective UV light response with a cut-off wavelength at ∼370 nm, and excellent electron field emission properties with an emission current density of 11 mA/cm 22 at an applied field of ∼20 V/μm.

AB - ZnO single-crystal microtubes were fabricated using an encapsulated microwave growth method. The ZnO crystals are grown in hexagonal hollow tube form with a well faceted end and side surfaces, which have cross-sectional dimensions of 100 to 250 μm, lengths of 3-5 mm, and wall thickness of 1-2 μm. Under optical excitation, a strong near-band-edge emission was obtained at a peak wavelength of 377.8 nm with a full width at half maximum of 11 nm. The ZnO microtubes exhibited a highly selective UV light response with a cut-off wavelength at ∼370 nm, and excellent electron field emission properties with an emission current density of 11 mA/cm 22 at an applied field of ∼20 V/μm.

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Zinc oxide single-crystal microtubes

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