When n-type semiconductor is heated?
2011
When n-type semiconductor is heated?
Answer: D. number of electron and holes increases equally — Heating an n-type semiconductor provides thermal energy that breaks covalent bonds, generating electron-hole pairs. This increases the concentration of both…
- A.
number of electrons increases while that of holes decreases
- B.
number of holes increases while that of electrons decreases
- C.
number of electrons and holes remain the same
- D.
number of electron and holes increases equally
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Correct answer: D
Heating an n-type semiconductor provides thermal energy that breaks covalent bonds, generating electron-hole pairs. This increases the concentration of both majority carriers (electrons) and minority carriers (holes) simultaneously. Since pairs are generated in matched quantities, the increase is equal for both carrier types.