Core–shell Si 1−x Ge x nanowires with controlled structural defects for phonon scattering enhancement
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We demonstrate for the first time core-shell Si1-xGex alloy nanowires that can suppress the phonon propagation in nanowires without reducing the electrical conductivity. Non-uniformly distributed structural defects in the outer shells of the Si1-xGex nanowires enhance boundary scattering during phonon transport, while a defect-free core provides a current path for electrical carriers. This journal is © the Partner Organisations 2014.
author list (cited authors)
Lee, J. W., Lee, J., Yi, S., Seo, Y. M., Choi, B. L., Yu, C., ... Lee, E. K.