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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

Résultats de recherche: Conference contribution

Résumé

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.

langue originaleEnglish
titre2014 7th International Silicon-Germanium Technology and Device Meeting, ISTDM 2014
EditeurIEEE Computer Society
Pages71-72
Nombre de pages2
ISBN (imprimé)9781479954285
Les DOIs
étatPublished - 11 août 2014
Evénement7th International Silicon-Germanium Technology and Device Meeting, ISTDM 2014 - Singapore, Singapore
Durée: 2 juin 20144 juin 2014

Série de publications

Nom2014 7th International Silicon-Germanium Technology and Device Meeting, ISTDM 2014

Conference

Conference7th International Silicon-Germanium Technology and Device Meeting, ISTDM 2014
Pays/TerritoireSingapore
La villeSingapore
période2/06/144/06/14

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