Strathprints Home | Open Access | Browse | Search | User area | Copyright | Help | Library Home | SUPrimo

InGaN nano-ring structures for high-efficiency light emitting diodes

Choi, H.W. and Jeon, C.W. and Liu, C. and Watson, I.M. and Dawson, M.D. and Edwards, P.R. and Martin, R.W. and Tripathy, S. and Chua, S.J. (2005) InGaN nano-ring structures for high-efficiency light emitting diodes. Applied Physics Letters, 86 (2). ISSN 0003-6951

[img]
Preview
PDF - Published Version
Download (472Kb) | Preview

    Abstract

    A technique based on the Fresnel diffraction effect for the fabrication of nano-scale site-controlled ring structures in InGaN/GaN multi-quantum well structures has been demonstrated. The ring structures have an internal diameter of 500 nm and a wall width of 300 nm. A 1 cm-1 Raman shift has been measured, signifying substantial strain relaxation from the fabricated structure. The 9 nm blueshift observed in the cathodoluminescence spectra can be attributed to band filling and/or screening of the piezoelectric field. A light emitting diode based on this geometry has been demonstrated.

    Item type: Article
    ID code: 5261
    Keywords: indium compounds, gallium compounds, nanostructured materials, nanolithography, optical fabrication, light emitting diodes, photonics, Optics. Light
    Subjects: Science > Physics > Optics. Light
    Department: Faculty of Science > Institute of Photonics
    Faculty of Science > Physics
    Related URLs:
      Depositing user: Strathprints Administrator
      Date Deposited: 31 Jan 2008
      Last modified: 21 Jul 2013 04:04
      URI: http://strathprints.strath.ac.uk/id/eprint/5261

      Actions (login required)

      View Item

      Fulltext Downloads: