Anomalous Residual-Stress in Pulsed-Laser-Annealed Silicon-on-Sapphire Revealed by Raman Scattering

  • Yamazaki Ken-ichi
    Department of Electronics, Faculty of Engineering, Kobe University
  • Yamamoto Keiichi
    Department of Electronics, Faculty of Engineering, Kobe University
  • Abe Kenji
    Department of Electronics, Faculty of Engineering, Kobe University
  • Yamada Masayoshi
    Department of Electronics, Faculty of Engineering, Kobe University

Bibliographic Information

Published
1981
DOI
  • 10.1143/jjap.20.l299
Publisher
The Japan Society of Applied Physics

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Description

Raman scattering measurements have been made in silicon-on-sapphire (SOS) annealed by irradiation of Q-switched ruby laser light. It is found that Raman signals from the optic mode show downward shifts of 4 to 5.5 cm−1 compared with the Raman shift in unstressed single crystal silicon, and that large tensile stress exists reaching 10–13.7 kbar in the recrystallized SOS. The origin of this anomalous stress is discussed on the basis of the laser annealing models that have been proposed to date.

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