Structural properties of CdO layers grown on GaAs (0 0 1) substrates by metalorganic molecular beam epitaxy

Bong Joong Kim, Y. W. Ok, Tae Yeon Seong, A. B M A Ashrafi, H. Kumano, I. Suemune

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Transmission electron microscopy (TEM) and transmission electron diffraction (TED) examination has been made to investigate the microstructural behaviour of rock-salt CdO layers grown on (0 0 1) GaAs substrates with two different buffer layers of ZnS and ZnO/ZnS. It is shown that the CdO layer grown on the ZnS buffer layer has epitaxial relationship to the GaAs substrate, even though a low density of CdO nano-crystallites (18-25 nm across) are formed at the CdO/ZnS interface region. TEM and TED results show that the CdO layer grown on the ZnO/ZnS buffer layer is polycrystalline. TED results also show that the ZnO buffer layer is polycrystalline with a mixture of wurtzite and zinc-blende phases, which results in the formation of polycrystalline CdO layers.

Original languageEnglish
Pages (from-to)219-225
Number of pages7
JournalJournal of Crystal Growth
Volume252
Issue number1-3
DOIs
Publication statusPublished - 2003 May 1
Externally publishedYes

Fingerprint

Buffer layers
Molecular beam epitaxy
Structural properties
molecular beam epitaxy
Electron diffraction
Substrates
buffers
Transmission electron microscopy
electron diffraction
Crystallites
Zinc
Salts
Rocks
transmission electron microscopy
halites
gallium arsenide
wurtzite
crystallites
zinc
examination

Keywords

  • A1. Crystal structure
  • A1. Defects
  • A3. Metalorganic molecular beam epitaxy
  • B1. Oxides
  • B2. Semiconducting II-VI materials

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Structural properties of CdO layers grown on GaAs (0 0 1) substrates by metalorganic molecular beam epitaxy. / Kim, Bong Joong; Ok, Y. W.; Seong, Tae Yeon; Ashrafi, A. B M A; Kumano, H.; Suemune, I.

In: Journal of Crystal Growth, Vol. 252, No. 1-3, 01.05.2003, p. 219-225.

Research output: Contribution to journalArticle

Kim, Bong Joong ; Ok, Y. W. ; Seong, Tae Yeon ; Ashrafi, A. B M A ; Kumano, H. ; Suemune, I. / Structural properties of CdO layers grown on GaAs (0 0 1) substrates by metalorganic molecular beam epitaxy. In: Journal of Crystal Growth. 2003 ; Vol. 252, No. 1-3. pp. 219-225.
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AU - Kumano, H.

AU - Suemune, I.

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AB - Transmission electron microscopy (TEM) and transmission electron diffraction (TED) examination has been made to investigate the microstructural behaviour of rock-salt CdO layers grown on (0 0 1) GaAs substrates with two different buffer layers of ZnS and ZnO/ZnS. It is shown that the CdO layer grown on the ZnS buffer layer has epitaxial relationship to the GaAs substrate, even though a low density of CdO nano-crystallites (18-25 nm across) are formed at the CdO/ZnS interface region. TEM and TED results show that the CdO layer grown on the ZnO/ZnS buffer layer is polycrystalline. TED results also show that the ZnO buffer layer is polycrystalline with a mixture of wurtzite and zinc-blende phases, which results in the formation of polycrystalline CdO layers.

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