Thermal stability and surface passivation of Ge nanowires coated by epitaxial SiGe shells

Shu Hu, Yoko Kawamura, Kevin C.Y. Huang, Yanying Li, Ann F. Marshall, Kohei M. Itoh, Mark L. Brongersma, Paul C. McIntyre

研究成果: Article査読

29 被引用数 (Scopus)

抄録

Epitaxial growth of a highly strained, coherent SiGe alloy shell around a Ge nanowire core is investigated as a method to achieve surface passivation and carrier confinement, important in realizing nanowire devices. The high photoluminescence intensity observed from the core-shell nanowires with spectral features similar to that of bulk Ge indicates effective surface passivation. Thermal stability of these core-shell heterostructures has been systematically investigated, with a method demonstrated to avoid misfit strain relaxation during postgrowth annealing.

本文言語English
ページ(範囲)1385-1391
ページ数7
ジャーナルNano Letters
12
3
DOI
出版ステータスPublished - 2012 3月 14

ASJC Scopus subject areas

  • バイオエンジニアリング
  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学
  • 機械工学

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