Investigation of facet-dependent InGaN growth for core-shell LEDs

Gîrgel, Ionut and Edwards, Paul R. and Le Boulbar, Emmanuel and Allsopp, Duncan W. E. and Martin, Robert W. and Shields, Philip A. (2015) Investigation of facet-dependent InGaN growth for core-shell LEDs. Proceedings of SPIE, 9363. 93631V. ISSN 0277-786X (https://doi.org/10.1117/12.2077625)

[thumbnail of Girgel-etal-SPIE-2015-Investigation-of-facet-dependent-InGaN-growth]
Preview
 Text. Filename: Girgel_etal_SPIE_2015_Investigation_of_facet_dependent_InGaN_growth.pdf
Accepted Author Manuscript
Download (680kB)| Preview

Abstract

In this work we used vertically aligned GaN nanowires with well-defined crystal facets, i.e. the {11-20} a-plane, {10-10} m-plane, (0001) c-plane and {1-101} semi-polar planes, to investigate the impact of MOVPE reactor parameters on the characteristics of an InGaN layer. The morphology and optical characteristics of the InGaN layers grown of each facet were investigated by cathodoluminescence (CL) hyperspectral imaging and scanning electron microscopy (SEM). The influence of reactor parameters on growth rate and alloy fraction were determined and compared. The study revealed that pressure can have an important impact on the incorporation of InN on the {10-10} m-plane facets. The growth performed at 750°C and 100mbar led to a homogeneous high InN fraction of 25% on the {10-10} facets of the nanowires. This work suggests homogeneous good quality GaN/InGaN core-shell structure could be grown in the near future.

  • Item type:Article
    ID code:54092
    Dates:
    Date
    Event
    13 March 2015
    Published
    7 February 2015
    Accepted
    Notes:Copyright 2015 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Technology and Innovation Centre > Bionanotechnology
    Technology and Innovation Centre > Photonics
    Depositing user: Pure Administrator
    Date deposited:27 Aug 2015 10:31
    Last modified:08 Apr 2024 22:24
    URI:https://strathprints.strath.ac.uk/id/eprint/54092
CORE (COnnecting REpositories)