Electroluminescence from ZnO nanowire-based p-GaN/n-ZnO heterojunction light-emitting diodes

R. Guo, J. Nishimura, M. Matsumoto, M. Higashihata, Daisuke Nakamura, T. Okada

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

Vertically aligned ZnO nanowires were successfully grown on the sapphire substrate by nanoparticle-assisted pulsed laser deposition (NAPLD), which were employed in fabricating the ZnO nanowire-based heterojunction structures. p-GaN/n-ZnO heterojunction light-emitting diodes (LEDs) with embedded ZnO nanowires were obtained by fabricating p-GaN:Mg film/ZnO nanowire/n-ZnO film structures. The current-voltage measurements showed a typical diode characteristic with a threshold voltage of about 2.5 V. Electroluminescence (EL) emission having the wavelength of about 380 nm was observed under forward bias in the heterojunction diodes and was intensified by increasing the applied voltage up to 30 V.

Original languageEnglish
Pages (from-to)33-38
Number of pages6
JournalApplied Physics B: Lasers and Optics
Volume94
Issue number1
DOIs
Publication statusPublished - Jan 1 2009

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electroluminescence
heterojunctions
nanowires
light emitting diodes
diodes
threshold voltage
electrical measurement
pulsed laser deposition
sapphire
nanoparticles
electric potential
wavelengths

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Electroluminescence from ZnO nanowire-based p-GaN/n-ZnO heterojunction light-emitting diodes. / Guo, R.; Nishimura, J.; Matsumoto, M.; Higashihata, M.; Nakamura, Daisuke; Okada, T.

In: Applied Physics B: Lasers and Optics, Vol. 94, No. 1, 01.01.2009, p. 33-38.

Research output: Contribution to journalArticle

Guo, R. ; Nishimura, J. ; Matsumoto, M. ; Higashihata, M. ; Nakamura, Daisuke ; Okada, T. / Electroluminescence from ZnO nanowire-based p-GaN/n-ZnO heterojunction light-emitting diodes. In: Applied Physics B: Lasers and Optics. 2009 ; Vol. 94, No. 1. pp. 33-38.
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