Abstract

ABSTRACTWe found that the intrinsic gettering can be effectively realized in oxygen-lean Czochralski silicon grown in a magnetic field as well as in oxygen-free float-zone silicon. The intrinsic gettering has been observed thus far only in oxygen-rich Czochralski silicon and it has been believed to be intimately related to oxygen. We present experimental characteristics of the new intrinsic gettering process, and we propose a model involving outdiffusion and precipitation of silicon interstitials rather than oxygen which is involved in the standard intrinsic gettering.

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