What is p-type doping in semiconductor?
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1 Answer
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In p-type doping a special atom is added called acceptors to a pure semiconductor, such as Silicon, to increase the number of holes where electrons are missing. For instance, each Silicon atom has 4 valence electrons to which you add a dopant that has 3 valence electrons, say Boron, which has 1 less electron than silicon. In this case, Boron will try to bond with 4 neighbouring atoms, but Boron has one less electron. This missing electron will be the hold. These holes can move when voltage is applied, and the semiconductor will conduct through holes instead of electrons.
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