MHT CET 2024 Physics question

Not in JEE Advanced syllabus

Which one of the following statements is true? A p-type semiconductor is doped with

(A)trivalent impurity and electrons are majority carriers
(B)pentavalent impurity and electrons are minority carriers
(C)pentavalent impurity and holes are minority carriers
(D)trivalent impurity and holes are majority carriersCorrect

Answer: (D)

Solution

A p-type semiconductor is formed by doping a tetravalent semiconductor (Si or Ge) with a trivalent (acceptor) impurity such as B, Al or In. Each impurity atom leaves one bond incomplete, creating a hole, so holes are the majority

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Question ID VK-092902