Q43Multiple correct
Which of the following statements are true about semiconductors?
- (i)Silicon doped with electron rich impurity is a p-type semiconductor.
- (ii)Silicon doped with an electron rich impurity is an n-type semiconductor.
- (iii)Delocalised electrons increase the conductivity of doped silicon.
- (iv)An electron vacancy increases the conductivity of n-type semiconductor.
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(ii) Silicon doped with an electron rich impurity is an n-type semiconductor.
(iii) Delocalised electrons increase the conductivity of doped silicon.