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Original Articles

The mechanisms of impurity redistribution on laser-annealing of ion-implanted semiconductors

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Pages 179-181 | Received 15 Aug 1977, Published online: 13 Sep 2006
 

Abstract

Ion-implanted impurity profiles were studied after laser annealing in different regimes. It was found that the redistribution of impurities in silicon occurs after annealing with both millisecond and nanosecond laser pulses. The character of redistribution depends on the power density of the light beam. In the case of relatively low power-density the most probable mechanism of impurity migration seems to be interstitial diffusion. For high power-densities the redistribution is caused by the flux of excess vacancies or by the recrystallization of the melted surface layer.

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