The effect of a Sb and Ga intermediate layer on the interfacial layer properties of epitaxial GaSb on GaAs grown by metalorganic chemical vapor deposition

Minh Thien Huu Ha, Sa Hoang Huynh, Huy Binh Do, Ching Ting Lee, Quang Ho Luc, Edward Yi Chang

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

A method for the growth of high quality GaSb epilayer on GaAs (001) substrate is demonstrated in this study. It is found that a superior GaSb/GaAs interface can be obtained by depositing a thin Sb-precursor layer on the GaAs substrate containing a GaAs buffer layer. It is suggested that the growth occurs via the interface misfit (IMF) growth mode. Without this treatment, GaSb epilayer may grow according to the Stranski–Krastanov mechanism or via a blend of the Stranski–Krastanov and IMF mechanisms, leading to an inferior GaSb/GaAs interface. This could be due to the intermixing of anions, leading to the turbulent composition and misfit dislocation distribution at the heterointerface. It appears that with the addition of a Sb layer, IMF arrays can be formed at GaSb/GaAs interface resulting in superior GaSb layer without the need for changing the growth parameters.

原文English
頁(從 - 到)430-435
頁數6
期刊Thin Solid Films
669
DOIs
出版狀態Published - 2019 1月 1

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 表面和介面
  • 表面、塗料和薄膜
  • 金屬和合金
  • 材料化學

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