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PHYSICS

JAMB 2007 - Question 11

Physics 2007 JAMB Past Questions - Question 11: silicon doped with aluminium and germanium doped with arsenic becomes

Choose the correct answers from the options given.

silicon doped with aluminium and germanium doped with arsenic becomes

A: n type semiconductors

B: p type semiconductors

C: n and p types respectively

D: p- and n- types respectively

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Correct Answer

Explanation

When silicon, a four valency element, is doped with aluminum, a three valency element, a p-type semiconductor is produced where the major carriers are the electrons.
Thus, the correct option is p-type and n-type respectively