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Oxidized In-containing III-V(100) surfaces: Formation of crystalline oxide films and semiconductor-oxide interfaces

Författare:
  • M. P. J. Punkkinen
  • P. Laukkanen
  • J. Lang
  • M. Kuzmin
  • M. Tuominen
  • V. Tuominen
  • J. Dahl
  • M. Pessa
  • M. Guina
  • K. Kokko
  • Janusz Sadowski (Dr)
  • B. Johansson
  • I. J. Vayrynen
  • L. Vitos
Publiceringsår: 2011
Språk: Engelska
Publikation/Tidskrift/Serie: Physical Review B
Volym: 83
Nummer: 19
Dokumenttyp: Artikel
Förlag: Amer Physical Soc

Sammanfattning

Previously found oxidized III-V semiconductor surfaces have been generally structurally disordered and useless for applications. We disclose a family of well-ordered oxidized InAs, InGaAs, InP, and InSb surfaces found by experiments. The found epitaxial oxide-III-V interface is insulating and free of defects related to the harmful Fermi-level pinning, which opens up new possibilities to develop long-sought III-V metal-oxide-semiconductor transistors. Calculations reveal that the early stages in the oxidation process include only O-III bonds due to the geometry of the III-V(100)c(8 x 2) substrate, which is responsible for the formation of the ordered interface. The found surfaces provide a different platform to study the oxidation and properties of oxides, e. g., the origins of the photoemission shifts and electronic structures, using surface science methods.

Disputation

Nyckelord

  • Physics and Astronomy

Övriga

Published
Yes
  • ISSN: 1098-0121

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