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Theory and simulation of dopant implantation and diffusion in SiGe

Physica Status Solidi (B) Basic Research, ISSN: 0370-1972, Vol: 239, Issue: 1, Page: 35-43
2003
  • 6
    Citations
  • 0
    Usage
  • 11
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    6
    • Citation Indexes
      6
  • Captures
    11

Conference Paper Description

Strained Si-based technology has imposed a new challenge for understanding dopant implantation and diffusion in SiGe that is often used as the buffer layer for a strained Si cap layer. In this work, we describe our latest modeling effort investigating the difference in dopant implantation and diffusion between Si and SiGe. A lattice expansion theory was developed to account for the volume change due to Ge in Si and its effect on defect formation enthalpy. The theory predicts that As diffusion in SiGe is enhanced by a factor of ∼10, P diffusion by a factor of ∼2, and B diffusion is retarded by a factor of ∼6, when compared to bulk Si. These predictions are consistent with experiment. Dopant profiles for As, P, and B were simulated using process simulators FLOOPS and DIOS. The simulated profiles are in good agreement with experiment. Dopant implantation was simulated using REED-MD. The results showed a noticeable difference in peak and tail positions SiGe compared to Si. © 2003 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Bibliographic Details

Chun Li Liu; Marius Orlowski; Aaron Thean; Alex Barr; Ted White; Bich Yen Nguyen; Keith Beardmore; Xiang Yang Liu; Hernan Rueda

Wiley

Materials Science; Physics and Astronomy

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