Why are elemental dopants for Silicon or Germanium usually chosen from group XIII or group XV?

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alok kumar singh | Contributor-Level 10

4 months ago

This is a Short Answer Type Questions as classified in NCERT Exemplar

Explanation- The size of the dopant atom should be such that their presence in the pure semiconductor does not distort the semiconductor but easily contribute the charge carriers on forming covalent bonds with Si or Ge atoms, which are provided by group XIII or group XV elements.

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Why are elemental dopants for Silicon or Germanium usually chosen from group XIII or group XV?

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