TITLE

Zinc oxide single-crystal microtubes

AUTHOR(S)
Jiping Cheng; Ruyan Guo; Qing-Ming Wang
PUB. DATE
November 2004
SOURCE
Applied Physics Letters;11/29/2004, Vol. 85 Issue 22, p5140
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
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/cm2 at an applied field of ∼20 V/μm.
ACCESSION #
15244192

 

Related Articles

  • Electrochemically deposited zinc oxide arrays for field emission. Xu, C. X.; Sun, X. W.; Fang, S. N.; Yang, X. H.; Yu, M. B.; Zhu, G. P.; Cui, Y. P. // Applied Physics Letters;4/17/2006, Vol. 88 Issue 16, p161921 

    Periodic zinc oxide rod arrays were fabricated on patterned templates by electrochemical deposition and were employed as field emitters. The morphology and crystal structure of the zinc oxide array were examined by scanning electron microscopy and x-ray diffraction, respectively. The dependence...

  • Stable field emission from hydrothermally grown ZnO nanotubes. Wei, A.; Sun, X. W.; Xu, C. X.; Dong, Z. L.; Yu, M. B.; Huang, W. // Applied Physics Letters;5/22/2006, Vol. 88 Issue 21, p213102 

    Zinc oxide nanotube arrays were prepared by hydrothermal reaction in ammonia and zinc chloride solutions, and the field emission properties were tested. The turn-on field of the field emission was extrapolated to be about 7.0 V/μm at a current density of 0.1 μA/cm2. Meanwhile, the emission...

  • Synthesis and field-emission properties of roselike ZnO nanostructures. Xu, L. L.; Wu, X. L.; Xiong, X.; Zhu, J.; Chen, H. T.; Huang, G. S.; Chu, P. K. // Applied Physics A: Materials Science & Processing;May2008, Vol. 91 Issue 2, p247 

    Self-assembled roselike ZnO nanostructures were synthesized via thermal evaporation of zinc powders without catalytic assistance at the relatively low temperature of 550 °C. The roselike structures consist of a large number of ZnO nanorods that uniformly arrange into hexagonal multilayers....

  • Field emission of one-dimensional micro- and nanostructures of zinc oxide. Yang, Y. H.; Wang, B.; Xu, N. S.; Yang, G. W. // Applied Physics Letters;7/24/2006, Vol. 89 Issue 4, p043108 

    A variety of one-dimensional (1D) micro- and nanostructures of zinc oxide (ZnO) were self-assembled on amorphous carbons using thermal chemical vapor transport and condensation without any metal catalysts. The low turn-on electronic field and the higher current density were achieved on these 1D...

  • Field emission from well-aligned zinc oxide nanowires grown at low temperature. Lee, C. J.; Lee, T. J.; Lyu, S. C.; Zhang, Y.; Ruh, H.; Lee, H. J. // Applied Physics Letters;11/4/2002, Vol. 81 Issue 19, p3648 

    Field electron emission from vertically well-aligned zinc oxide (ZnO) nanowires, which were grown by the vapor deposition method at a low temperature of 550 °C, was investigated. The high-purity ZnO nanowires showed a single crystalline wurtzite structure. The turn-on voltage for the ZnO...

  • Stable, self-ballasting field emission from zinc oxide nanowires grown on an array of vertically aligned carbon nanofibers. Li, C.; Zhang, Y.; Mann, M.; Hiralal, P.; Unalan, H. E.; Lei, W.; Wang, B. P.; Chu, D. P.; Pribat, D.; Amaratunga, G. A. J.; Milne, W. I. // Applied Physics Letters;4/5/2010, Vol. 96 Issue 14, p143114 

    A structure composed of zinc oxide nanowires (ZNWs) grown hydrothermally on an array of vertically aligned carbon nanofibers (CNFs) was fabricated and its field emission properties determined and compared with bare CNF arrays. The combination produced a macroscopic turn-on field of 1.2 V/μm...

  • Growth Parameters for Films of Hydrothermally Synthesized One-Dimensional Nanocrystals of Zinc Oxide. Mahmood, Mohammad A.; Jan, Sadaqat; Shah, Ibrar A.; Khan, Imran // International Journal of Photochemistry;2016, Vol. 2016, p1 

    Zinc oxide has been the focus of material research due to its potential applications in a variety of novel fields. The material exhibits anisotropic growth in the form of single crystal rods/wires of length in microns and thickness in several tens of nanometers through a facile and low...

  • Zinc Oxide Single Crystals: Influence of Temperature and Orientation of Crystals on Their Mechanical Properties. Demyanets, L. N.; Sizova, N. L.; Li, L. E. // Crystallography Reports;Jul2005, Vol. 50 Issue 4, p646 

    Zinc oxide single crystals are grown hydrothermally and their microhardness is measured on different {hkil} faces in the temperature range from liquid nitrogen temperature to 900°C. The coefficient K1C of fracture roughness and the surface energy γ of fracture are estimated. The (0001)...

  • Near-band-edge slow luminescence in nominally undoped bulk ZnO. Monteiro, T.; Neves, A. J.; Carmo, M. C.; Soares, M. J.; Peres, M.; Wang, J.; Alves, E.; Rita, E.; Wahl, U. // Journal of Applied Physics;7/1/2005, Vol. 98 Issue 1, p013502 

    We report the observation of slow emission bands overlapped with the near-band-edge steady-state luminescence of nominally undoped ZnO crystals. At low temperatures the time-resolved spectra are dominated by the emission of several high-energy bound exciton lines and the two-electron satellite...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics