Discussion :: Physics
- When a piece of pure silicon is doped with aluminium, then
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A.
The conductivity of the doped silicon piece will remain the same |
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B.
The doped silicon piece will become n-type |
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C.
The doped silicon piece will become p-type |
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D.
The resistivity of the doped silicon piece will increase |
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Answer : Option C
Explanation :
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.
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