Yellow and red luminescence in Mg-implanted GaN epitaxial films

  • You Wei
  • , Zhang Xiao-Dong
  • , Zhang Li-Min
  • , Yang Zhen
  • , Bian Hai
  • , Liu Zheng-Min*
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

X-ray diffraction (XRD), attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR) and photoluminescence (PL) were applied to study yellow and red luminescence properties of as-grown and Mg-implanted n-type wurtzite GaN films grown on sapphire substrates by metal-organic chemical vapor deposition. The influence of different Mg-implanted fluences on yellow and red luminescence was studied. The as-grown GaN thin films exhibited intense broad yellow emission which reduces drastically after Mg ion implantation. A red luminescence band at approximately 750 nm appears when the Mg implantation fluence is low (1013 cm-2) whereas a yellow luminescence band suddenly increases at a Mg-implanted fluence of 1016 cm-2. The possible reasons of these phenomena are discussed.

Original languageEnglish
Pages (from-to)41-46
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume264
Issue number1
DOIs
StatePublished - Nov 2007
Externally publishedYes

Keywords

  • Gallium nitride (GaN)
  • Infrared spectra
  • Ion implantation
  • Photoluminescence spectra

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