Dynamical imaging of nickel disilicide nucleation and step flow propagation in defect-engineered Si nanowire

W. Tang, S. T. Picraux, A. M. Gusak, K. N. Tu, S. A. Dayeh

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

The Ni silicides and Si metal-semiconductor contacts are a vital element in the state-of-the-art commercial transistor devices. The latest source/drain (S/D) engineering technology designs the S/D crystal structure (e.g. intentional incorporation of stacking faults) that strains the channel to enhance device performance. Understanding the role of structural alternation, or defects, in Si-Ni reaction is therefore important in achieving precise control of the contact formation process at an atomic scale. Here, we present a study of Si-Ni reaction by lattice-resolved in-situ transmission electron microscopy (TEM) and found that presence of defects in Si can fundamentally change the silicide nucleation mechanism and growth behavior.
Original languageEnglish
Pages (from-to)101-108
JournalECS Transactions
Volume64
Issue number8
DOIs
Publication statusPublished - 2014
Externally publishedYes
EventSymposium on Semiconductors, Dielectrics, and Metals for Nanoelectronics 12 - 2014 ECS and SMEQ Joint International Meeting - Cancun, Mexico
Duration: 5 Oct 20149 Oct 2014

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