Selective growth of ZnO nanorods by patterning of sol-gel-derived thin film

Korea Institute of Science and Technology, Sŏul, Seoul, South Korea
Journal of Electroceramics (Impact Factor: 1.74). 11/2006; 17(2):455-459. DOI: 10.1007/s10832-006-5412-7


An effective method of fabricating micro and sub micro patterned zinc oxide nanorods without a transient metal catalytic assistants
via hydrothermal synthesis using micro molding technique was presented. Micro molding of sol-gel-derived precursor layer was
clearly accomplised by conformal contact of elastomeric molds with various kinds of patterns. The selective growth of the
nanorods over a large area of the pre-patterned seed layer was observed with a pattern feasibility of 250 nm. The orientation
of the nanorods was normal to the seed layer while characteristic sizes of the rod didn’t show any dependence on the diameter
of the seed particles. Presented synthetic process can provide simpler way of fabricating an array of semiconductor one-dimensional

1 Follower
11 Reads
  • [Show abstract] [Hide abstract]
    ABSTRACT: The hydrothermal method for nanostructure synthesis is of considerable interest for practical applications since it is a low cost, environmentally friendly technique which can be used on large area and/or flexible substrates, as well as fabrication of free standing nanostructures. The low substrate temperature enables compatibility with temperature sensitive substrates such as plastics or textiles, while fabrication of aligned nanorods on substrates is possible with substrate pretreatment to control the nucleation. Up to date, hydrothermal synthesis of a number of different materials has been demonstrated. In this review, we will provide an overview of the relevant issues concerning hydrothermal synthesis of different nanostructured materials.
    10/2007; 1(2):121-8. DOI:10.1002/chin.200741211
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The field-emission and current−voltage characteristics of individual W5O14 nanowires were studied using a transmission electron microscope and a field-emission microscope. The individual W5O14 nanowires made good ohmic contacts with W and Pt at room temperature and had excellent field-emission properties. The field-emission measurements showed that a current as high as 35 μA can be extracted from a single nanowire. A reduced angular current density of 28.7 nAsr-1V-1 was obtained from a W5O14 nanowire with a sharp tip. These results suggest that W5O14nanowires might be a realistic candidate as the source for a low-energy electron beam.
    The Journal of Physical Chemistry C 03/2008; 112(14). DOI:10.1021/jp8002273 · 4.77 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: This paper reports a novel phenomenon that the ZnO nanorod arrays hydrothermally grown on the UV-treated area of the ZnO seeding layer exhibit different surface morphology and photoluminescence characteristics compared with those grown on the non-UV-treated area. The diameter distribution of the nanorods on the different areas is different too. The UV treatment makes the ZnO seeding layer hydrophilic, which is the exhibition of the change of the surface energy status. This change will affect the growth behavior of the ZnO nanorod arrays. Patterned ZnO nanorod arrays with different structures on the same substrate can be realized by hydrothermal method employing UV treatment of the ZnO seeding layer. This kind of UV treatment can find other applications in other preparation methods for 1D nanostructures of ZnO and other kinds of materials, and for the research of the hydrothermal growth mechanism of these nanostructures.
    Physica E Low-dimensional Systems and Nanostructures 03/2009; 41(5):757-761. DOI:10.1016/j.physe.2008.12.004 · 2.00 Impact Factor
Show more

Similar Publications