CBSE Class 12-science Answered
Why do hole carriers present in n-type semiconductor?
Asked by Topperlearning User | 04 Jun, 2014, 13:23: PM
Expert Answer
Due to the addition of pentavalent impurity, n-type material has a large number of free electrons. However, even at room temperature, some of the covalent bond breaks, thus releasing an equal number of free electrons and holes. Therefore n-type material has a large number of free electrons and a small number of holes.
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