#substitional defect

[materialsscienceandengineering]

Substitutional defects ( 2 ) are point defects in which an impurity atom takes the place of a native atom within the crystal lattice. Semiconductors often intentionally add substitional defects through doping, such as adding boron or phosphorous to silicon to create an n- or p-type semiconductor, and certain alloys include extraneous elements to create substitional defects for solution hardening purposes.

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