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Question

Physics Question on Semiconductor electronics: materials, devices and simple circuits

In an intrinsic semiconductor:

A

ne>nh{{n}_{e}}>{{n}_{h}}

B

nh>ne{{n}_{h}}>{{n}_{e}}

C

ne=nh{{n}_{e}}={{n}_{h}}

D

ne=nh=0{{n}_{e}}={{n}_{h}}=0

Answer

ne=nh{{n}_{e}}={{n}_{h}}

Explanation

Solution

Pure semiconductors are intrinsic semiconductors. They have not any impurity. Hence, number of electrons in the conduction band is equal to the number of holes in valence band. It means ne=nh{{n}_{e}}={{n}_{h}} .