InterviewSolution
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InterviewSolution
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When a piece of pure silicon is doped with aluminium, thenA. The conductivity of the doped silicon piece will remain the sameB. The doped silicon piece will become n-typeC. The doped silicon piece will become p-typeD. The resistivity of the doped silicon piece will increase |
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Answer» The correct option is C) the doped silicon piece will become p-type. 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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