Growth of thick AlGaN by mixed-source hydride vapor phase epitaxy

  • H. S. Ahn
  • , K. H. Kim
  • , M. Yang
  • , J. Y. Yi
  • , H. J. Lee
  • , C. R. Cho
  • , H. K. Cho
  • , S. W. Kim
  • , T. Narita
  • , Y. Honda
  • , M. Yamaguchi
  • , N. Sawaki

Research output: Contribution to journalArticlepeer-review

Abstract

Growth of a thick AlGaN layer on GaN/Al2O3 substrate is performed by mixed-source hydride vapor phase epitaxy (HVPE) method. The AlGaN material is compounded from chemical reaction between a NH3 and an aluminum-gallium chloride formed by HCl which is flown over metallic Ga mixed with Al. The AlGaN epitaxial layer is analyzed by Auger-electron spectroscopy (AES) and X-ray diffraction (XRD) measurement to characterize the AlGaN. Al concentration is estimated to be in the range of 0.5-6%. We suggest that the metallic Ga mixed with Al can be used as a group III source material in the HVPE growth of the AlGaN layer.

Original languageEnglish
Pages (from-to)178-182
Number of pages5
JournalApplied Surface Science
Volume243
Issue number1-4
DOIs
StatePublished - 30 Apr 2005
Externally publishedYes

Keywords

  • AES
  • AlGaN
  • GaN
  • HVPE
  • Optical property
  • XRD

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