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Issue
Korean Journal of Chemical Engineering,
Vol.21, No.3, 733-738, 2004
This article has been retracted. See the following:
Retraction: "Growth mechanism of needle-shaped ZnO nanostructures over NiO-coated Si substrates" [Korean J. Chem. Eng., 21(1), 257 (2004)]
Growth Mechanism of Needle-shaped ZnO Nanostructures over NiO-coated Si Substrates
Kim TY, Lee SH, Mo YH, Nahm KS, Kim JY, Suh EK, Kim M
ZnO nanostructures were synthesized over NiO-coated Si substrate by a thermal evaporation of Zn powders in a vertical chemical vapor deposition reactor. The ZnO nanostructures had a needle-like morphology and the diameter of the structures decreased linearly from the bottom to the top. The bottom diameters of the ZnO nano-needles normally ranged from 20-100 nm and the lengths were in the range of 2-3 μm. The clear lattice fringes in HRTEM image indicated the growth of good quality hexagonal single-crystal ZnO. Field emission characteristics of the ZnO nanoneedles showed that the turn-on field was about 8.87 V/μm with a field enhancement factor of about 1099. The growth mechanism of the ZnO nano-needles was proposed on the basis of experimental data.
Keywords: ZnO Nanostructures; Nano-needles; Evaporation of Zn; Characterization; Growth Mechanism
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[Cited By]
  1. Lee J, Nam SC, Tak Y, Korean Journal of Chemical Engineering, 22(1), 161, 2005
  2. Lee S, Im YH, Hahn YB, Korean Journal of Chemical Engineering, 22(2), 334, 2005
  3. Kim SH, Umar A, Hahn YB, Korean Journal of Chemical Engineering, 22(3), 489, 2005
  4. Kim SH, Hong JH, Hahn YB, Korean Journal of Chemical Engineering, 23(2), 325, 2006
  5. Umar A, Ra HW, Jeong JP, Suh EK, Hahn YB, Korean Journal of Chemical Engineering, 23(3), 499, 2006
  6. Umar A, Jeong JP, Suh EK, Hahn YB, Korean Journal of Chemical Engineering, 23(5), 860, 2006
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