Identify the incorrect statement.

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Si doped with electron rich impurity is a n-type semiconductor

Si doped with electron deficit impurity is a p-type semiconductor

Conductivity of doped silicon is increased by delocalised electrons

An electron vacancy increases the conductivity of n- type semiconductor

answer is D.

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Detailed Solution

Electronic excess is responsible for the conductivity of n-type semiconductors. This is achieved by adding electron rich impurity.

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