Method for introduction of an impurity dopant in SiC, a semicond

Semiconductor device manufacturing: process – Introduction of conductivity modifying dopant into... – Ion implantation of dopant into semiconductor region

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438931, H01L 21265

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active

058519084

ABSTRACT:
A method for introduction of an impurity dopant into a semiconductor layer of SiC comprises the step of ion implantation of the dopant in the semiconductor layer at a low temperature. The ion implantation is carried out in such a way that a doped and amorphous near-surface layer is formed, and the implantation step is followed by a step of annealing the semiconductor layer at such a high temperature that the dopant diffuses into the non-implanted sub-layer of the semiconductor layer following the near-surface layer.

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