Intrinsic vs ExtrinsicEasyQuestion 20201
Question
A pure semiconductor (no impurities) is called:
- AExtrinsic semiconductor
- BIntrinsic semiconductorCorrect
- Cp-type
- Dn-type
Correct answer
Intrinsic semiconductor
Explanation
Intrinsic semiconductor: pure material like Si or Ge. At room temperature, thermal energy breaks some covalent bonds → equal numbers of free electrons and holes. Extrinsic semiconductors are doped with impurities to alter carrier concentrations.