Silicon that has been doped with group- $13$ elements is called :

p-type semiconductor

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n-type semiconductor

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electron vacancy or hole

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none of the above

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Solution

The correct option is C p-type semiconductor
Si has atomic number, $14$ and so, it has $4$ valence electrons and it has been doped with group- $13$ elements which means it has one less electron. Hence, it is a p-type semiconductor.

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Similar questions

Which of the following statements are true about semiconductors ?

(a) Silicon doped with electron rich impurity is a p-type semiconductor

(b) Silicon doped with an electron rich impurity is an n-type semiconductor

(d) An electron vacancy increases the conductivity of n-type semiconductor

S i

p -

13

(A l, G a)

Silicon doped with electron-rich impurity forms .................

(a) P-type semiconductor (b) n-type semiconductor

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