Difference between Intrinsic and Extrinsic semiconductor?

Question

I don't know what are the difference between Intrinsic and Extrinsic semiconductor can someone tell me the answer in the field of electric ?

Umesh Sanjyal · Answer

Some difference between Intrinsic and Extrinsic semiconductor are mention below :1.Intrinsic  semiconductorA pure semiconductor without any significant impurities.

 Made of a single element or compound (e.g., silicon (Si) or germanium (Ge)).

Electrons and holes are generated in equal numbers due to thermal excitation.

 Low conductivity at room temperature, as it relies solely on thermally generated charge carriers.

Conductivity increases with temperature because more electron-hole pairs are generated.
Example :  Pure silicon (Si) or germanium (Ge).

 2.Extrinsic Semiconductor

 A semiconductor doped with impurities to enhance its conductivity.

Intrinsic semiconductor + impurity atoms (dopants).

Higher than intrinsic semiconductors due to the addition of impurities.

Conductivity increases with temperature, but at high temperatures, intrinsic behavior may dominate.
Example : n-type: Silicon doped with phosphorus.
p-type: Silicon doped with boron.

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