Nanoparticle embedded p-type electrodes for GaN-based flip-chip light emitting diodes

Joon Seop Kwak, J. O. Song, Tae Yeon Seong, B. I. Kim, J. Cho, C. Sone, Y. Park

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We have investigated high-quality ohmic contacts for flip-chip light emitting diodes using Zn-Ni nanoparticles/Ag schemes. The Zn-Ni nanoparticles/Ag contacts produce specific contact resistances of 10 -5-10 -6 Ωcm 2 when annealed at temperatures of 330-530°C for 1 min in air ambient, which are much better than those obtained from the Ag contacts. It is shown that blue InGaN/GaN multi-quantum well light emitting diodes fabricated with the annealed Zn-Ni nanoparticles/Ag contacts give much lower forward-bias voltages at 20 mA compared with those of the multi-quantum well light emitting diodes made with the as-deposited Ag contacts. It is further presented that the multi-quantum well light emitting diodes made with the Zn-Ni nanoparticles/Ag contacts show similar output power compared to those fabricated with the Ag contact layers.

Original languageEnglish
Pages (from-to)3547-3550
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume6
Issue number11
DOIs
Publication statusPublished - 2006 Nov 1

Fingerprint

Nanoparticles
Light emitting diodes
Electrodes
light emitting diodes
chips
Semiconductor quantum wells
Light
nanoparticles
electrodes
quantum wells
Ohmic contacts
Contact resistance
Bias voltage
contact resistance
electric contacts
Air
Temperature
output
air
electric potential

Keywords

  • GaN
  • Light emitting diode
  • Nanoparticle
  • Ohmic contacts

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Materials Science (miscellaneous)
  • Engineering (miscellaneous)

Cite this

Nanoparticle embedded p-type electrodes for GaN-based flip-chip light emitting diodes. / Kwak, Joon Seop; Song, J. O.; Seong, Tae Yeon; Kim, B. I.; Cho, J.; Sone, C.; Park, Y.

In: Journal of Nanoscience and Nanotechnology, Vol. 6, No. 11, 01.11.2006, p. 3547-3550.

Research output: Contribution to journalArticle

Kwak, Joon Seop ; Song, J. O. ; Seong, Tae Yeon ; Kim, B. I. ; Cho, J. ; Sone, C. ; Park, Y. / Nanoparticle embedded p-type electrodes for GaN-based flip-chip light emitting diodes. In: Journal of Nanoscience and Nanotechnology. 2006 ; Vol. 6, No. 11. pp. 3547-3550.
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AU - Cho, J.

AU - Sone, C.

AU - Park, Y.

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