Which is a dopant for a semiconductor that conducts electricity due to the movement of positive charges?

A. Thallium

B. Arsenic

C. Phosphorus

D. Antimony

Thallium

Explanation:

If pentavalent dopant are used in semiconductors then the majority charge carrier formed are electrons. These electrons are responsible for conductivity of semiconductor. Thus, due to pentavalant dopant the conduction of electricity is due to negative charges.

Arsenic, Phosphorus, Antimony are are pentavatant dopant. So, when these dopants are added the conductivity of element is due to negative charge.

If trivalent dopant are used in the semiconductors the majority charge carrier formed are holes. These holes are responsible for conductivity of semiconductor. Thus, due to trivalant dopant the conduction of electricity is due to positive charges.

Thallium is trivalant dopant. Thus, it conducts electricity due to positive charges.

D. Antimony is the correct answer.