When a piece of pure silicon is doped with aluminium, then
A. The conductivity of the doped silicon piece will remain the same
B. The doped silicon piece will become n-type
C. The doped silicon piece will become p-type
D. The resistivity of the doped silicon piece will increase
Answer: Option C
Solution(By Examveda Team)
p type of semiconductor is obtained when Silicon is doped with a trivalent impurity like Aluminium. Aluminium is a p-type dopant, which means that when a semiconductor i.e. silicon is doped with aluminium, it creates a hole (positively charged carrier) by accepting an electron from the silicon atom. Electrical conductivity of semiconductors increases and resistivity remains the same.This Question Belongs to General Knowledge >> Physics
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