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Challenges in epitaxial growth by RP-CVD of strained and relaxed GeSn epilayers on a Si substrate

  • David Patchett
  • , Maksym Myronov
  • , Stephen Rhead
  • , John Halpin
  • , David Leadley

Publikation: Conference contribution

Abstract

High Sn fraction GeSn has been grown by RP-CVD with SnCl4. However, challenges remain in creating device quality material suitable for subsequent growth. Surface segregation of tin, which increases with increased tin fraction, raises doubts about the suitability of GeSn as a platform for subsequent growth. Surface segregation may contribute to difficulties of achieving high growth rates and the growth of alloys with an increased tin fraction. The variability of tin content with depth necessitates the use of specialized compositional characterization such as SIMS. Growth of fully relaxed GeSn epilayers remains elusive, with many grown layers are partially relaxed. However, full relaxation is necessary for a direct bandgap material.

OriginalspracheEnglish
Titel2014 7th International Silicon-Germanium Technology and Device Meeting, ISTDM 2014
Herausgeber (Verlag)IEEE Computer Society
Seiten71-72
Seitenumfang2
ISBN (Print)9781479954285
DOIs
PublikationsstatusPublished - 11 Aug. 2014
Veranstaltung7th International Silicon-Germanium Technology and Device Meeting, ISTDM 2014 - Singapore, Singapore
Dauer: 2 Juni 20144 Juni 2014

Publikationsreihe

Name2014 7th International Silicon-Germanium Technology and Device Meeting, ISTDM 2014

Conference

Conference7th International Silicon-Germanium Technology and Device Meeting, ISTDM 2014
Land/GebietSingapore
OrtSingapore
Zeitraum2/06/144/06/14

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