Home Physics Semiconductor Electronics MHT CET Previous Year Question An -type and a -type silicon semiconductor…
Physics Semiconductor Electronics MHT CET Previous Year Question MCQ (Single Correct)

An -type and a -type silicon semiconductor can be obtained by doping pure silicon with

A
indium and sodium respectively
B
boron and arsenic respectively
C
arsenic and boron respectively
D
sodium and magnesium respectively.

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The correct answer is:
C

An -type semiconductor has electrons as majority charge carriers. Thus for obtaining a n-tye semiconductor silicon should be doped with electron rich donor elements of V A group like answer. Similarly, a p-type semiconductor has holes at majority charge carriers. Thus for obtaining a p-type semiconductor silicon should be doped with acceptor elements of group III A like boron.

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