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Issue
Korean Journal of Chemical Engineering,
Vol.22, No.3, 489-493, 2005
This article has been retracted. See the following:
Retraction: "Growth and formation mechanism of sea-urchin like ZnO nanostructures on Si" [Korean J. Chem. Eng., 22(3), 489 (2005)]
Growth and Formation Mechanism of Sea Urchin-Like ZnO Nanostructures on Si
Kim SH, Umar A, Hahn YB
Sea urchin-like nanostructures of ZnO consisting of ZnO nanowires with blunt faceted ends were grown on Si (100) substrates by oxidation of metallic Zn at 600 ℃. ZnO nanowires having a diameter of 30-60 nm and length of 2-4 μm were in similar shape with uniform diameter along its entire length with well faceted blunt ends. X-ray diffraction and transmission electron microscope analysis showed that the as-grown nanostructures were highly crystalline with wurtzite hexagonal structure having lattice constants of a=b=3.25 A and c=5.21 A. Room temperature photoluminescence (PL) measurements showed a weak near band-edge emission at 380 nm, but a strong green emission at 500-530 nm. A model for vapor-solid (VS) growth mechanism of ZnO nanowires was presented, in which nucleation of ZnO is crucial for the growth of the nanostructures.
Keywords: ZnO; Nanowires; Growth Mechanism; Structural and Optical Properties
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[Cited By]
  1. Kim SH, Hong JH, Hahn YB, Korean Journal of Chemical Engineering, 23(2), 325, 2006
  2. Umar A, Ra HW, Jeong JP, Suh EK, Hahn YB, Korean Journal of Chemical Engineering, 23(3), 499, 2006
  3. Umar A, Jeong JP, Suh EK, Hahn YB, Korean Journal of Chemical Engineering, 23(5), 860, 2006
  4. Kim GS, Kim YS, Seo HK, Shin HS, Korean Journal of Chemical Engineering, 23(6), 1037, 2006
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