CBSE Class 12-science Answered
In the case of exxtrinsic semiconductors, why thermally produced minor charge carriers meet the major chrge carriers and get destroyed?
Asked by Anirudh | 14 Aug, 2017, 10:41: AM
Expert Answer
1) An extrinsic semiconductor is the one which is doped with an impurity. By doing so, the majority charge carriers become abundant as compared to the minority charge carriers.
2) So, ultimately when there is a thermally generated minority carrier, it combines with the hole and gets destroyed (it means does not take part in conduction).
3) Even after this combination, there are still many majority carriers and they conduct electricity.
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