In which of the following statements, the obtained impure semiconductor is of p-type?

Germanium is doped with bismuth

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Silicon is doped with antimony

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Germanium is doped with gallium

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Silicon is doped with phosphorus

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Solution

The correct option is C Germanium is doped with gallium
A p-type semiconductor is produced by doping a 14 group element with a 13 group element as 14 group element has 4 valence electron whereas that of group 13 has 3 valence electron. We know that Germanium is a 14 group element and gallium is a 13 group element, thus doping germanium with gallium forms 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

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