Influence of Fe Contamination in Czochralski-Grown Silicon Single Crystals on LSI-Yield Related Crystal Quality Characteristics.

  • Miyazaki Morimasa
    Silicon Technology Center, Sumitomo Sitix Corporation, Kohoku, Kishima, Saga 849–05, Japan
  • Miyazaki Sumio
    Silicon Technology Center, Sumitomo Sitix Corporation, Kohoku, Kishima, Saga 849–05, Japan
  • Kitamura Takafumi
    Silicon Technology Center, Sumitomo Sitix Corporation, Kohoku, Kishima, Saga 849–05, Japan
  • Aoki Toshihiko
    Silicon Technology Center, Sumitomo Sitix Corporation, Kohoku, Kishima, Saga 849–05, Japan
  • Nakashima Yutaka
    Silicon Technology Center, Sumitomo Sitix Corporation, Kohoku, Kishima, Saga 849–05, Japan
  • Hourai Masataka
    Silicon Technology Center, Sumitomo Sitix Corporation, Kohoku, Kishima, Saga 849–05, Japan
  • Shigematsu Tatsuhiko
    Silicon Technology Center, Sumitomo Sitix Corporation, Kohoku, Kishima, Saga 849–05, Japan

Bibliographic Information

Published
1995
DOI
  • 10.1143/jjap.34.409
Publisher
The Japan Society of Applied Physics

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Description

Influence of Fe contamination in CZ-grown silicon single crystal on oxidation-induced stacking fault (OSF) generation density, carrier recombination and generation lifetimes, and gate oxide integrity (GOI) yield characteristics was experimentally investigated. Two Fe-doped silicon ingots were grown and tested. Concentration of Fe-B ([Fe-B]) in these silicon ingots measured by deep level transient spectroscopy (DLTS) was about 5× 1011 cm-3 and 5× 1012 cm-3, respectively. OSF density generated by three-step annealing showed dependence on [Fe-B]. Carrier recombination lifetime (τ r) showed good correlation with [Fe-B], and a quantitative relationship was established. OSF density after one-step annealing, carrier generation lifetime (τ g) and GOI yield were not so dependent on [Fe-B].

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