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Interfacial reactions between HfO 2 films prepared by atomic-layer-deposition and an InP substrate using postnitridation with NH 3 vapor

  • Y. S. Kang
  • , C. Y. Kim
  • , M. H. Cho
  • , C. H. An
  • , H. Kim
  • , J. H. Seo
  • , C. S. Kim
  • , T. G. Lee
  • , D. H. Ko
  • Yonsei University
  • Sungkyunkwan University
  • Korea Basic Science Institute
  • Korea Research Institute of Standards and Science

Research output: Contribution to journalArticlepeer-review

Abstract

The effects of the postnitridation annealing treatment of atomic-layer-deposited HfO 2InP (001) were investigated as a function of annealing temperature in an NH 3 ambient. The levels of interfacial oxides of In(PO 3) 3 and InPO 4 were gradually increased through re-oxidation process by the diffusion of oxygen impurities with increasing temperature. Especially, well-ordered hexagonal InN structure with (101) single direction was formed at HfO 2InP interface due to chemical reactions between In 2O 3 and the NH 3 vapor after a rapid thermal annealing at 600C. The diffusion of interfacial In and P oxides into HfO 2 film was found to be suppressed by presence of thick InN layer.

Original languageEnglish
Pages (from-to)G9-G11
JournalElectrochemical and Solid-State Letters
Volume15
Issue number4
DOIs
StatePublished - 2012

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