difference between intrinsic and extrinsic semiconductor
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Intrinsic Semiconductor Extrinsic Semiconductor
Pure type of semiconductor Impure type of semiconductor
Density of electrons is equal to the density of holes Density of electrons is not equal to the density of holes
Electrical conductivity is low Electrical conductivity is high
Dependence on temperature only Dependence on temperature as well as on the amount of impurity
The bandgap between conduction (C.B) and valence band (V.B) is small. The energy gap is higher than the intrinsic semiconductors.
Examples: Si, Ge Examples: GaAs, GaP
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