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Dendritic nanowire ultraviolet laser array.

Haoquan Yan1, Rongrui He, Justin Johnson

  • 1Department of Chemistry, Materials Science Div., Lawrence Berkeley National Lab, University of California, Berkeley, California 94720, USA.

Journal of the American Chemical Society
|April 17, 2003
PubMed
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Uniform semiconductor nanowires were self-assembled into ordered, comb-like arrays. These zinc oxide (ZnO) nanowire arrays function as ultraviolet laser arrays under optical excitation.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Optoelectronics

Background:

  • Self-organized crystal growth is crucial for fabricating ordered nanostructures.
  • Semiconductor nanowires offer unique optical and electronic properties.
  • Controlling nanowire assembly is key to developing advanced optical devices.

Purpose of the Study:

  • To explore self-organized dendritic crystal growth for nanowire assembly.
  • To create highly ordered one-dimensional microscale arrays of uniform semiconductor nanowires.
  • To investigate the potential of these arrays as ultraviolet laser sources.

Main Methods:

  • Utilized self-organized dendritic crystal growth.
  • Assembled uniform zinc oxide (ZnO) nanowires with diameters of 10-300 nm.

Related Experiment Videos

  • Achieved regular spacing of 0.1-2 micrometers on a stem structure.

    • Main Results:

    • Successfully fabricated ordered, comb-like microscale arrays of ZnO nanowires.
    • Demonstrated that individual ZnO nanowires act as Fabry-Perot optical cavities.
    • Showcased the formation of a highly ordered nanowire ultraviolet laser array.

    Conclusions:

    • Self-organized growth is an effective method for creating ordered nanowire arrays.
    • The fabricated ZnO nanowire arrays exhibit laser properties.
    • These ordered arrays hold promise for applications in ultraviolet optoelectronics.