Q. At room temperature the current in an intrinsic semiconductor is due to

A
Holes
B
Electrons
C
Ions
D
Holes and electrons
Solution:

An intrinsic (pure) semiconductor, also called an undoped semiconductor or i-type semiconductor, is a pure semiconductor without any significant dopant species present. The number of charge carriers is therefore determined by the properties of the material itself instead of the amount of impurities. Intrinsic material has equal number of holes and electrons.

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