What is a P-type material?
What will be an ideal response?
When pure semiconductor material is mixed with an impurity that has only three valence electrons, such as indium or gallium, the lattice structure changes, leaving a hole in the material. This hole is caused by a missing electron. Since the material now lacks an electron, it is no longer electrically neutral. Electrons are negative particles. The hole, which has taken the place of an electron, has a positive charge; therefore, the semiconductor material now has a net positive charge and is called a P-type material.
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