Question

for an extrinsic semiconductor the valence of the donor impurity is​

Answer 1

Answer:

Pentavalent impurities such as phosphorus, arsenic, antimony etc are called donor impurity. let us consider, pentavalent impurity phosphorus is added to silicon as shown in below figure. phosphorus atom has 5 valence electrons and silicon has 4 valence electrons.

Explanation:

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