Adding gallium, boron, or indium to pure silicon or germanium will create a material with an excess of ?

Adding gallium, boron, or indium to pure silicon or germanium will create a material with an excess of holes which is called a p-type material.

Explanation:

gallium, boron or indium are elements with three valency electron, and they are called Acceptor impurities. When acceptor impurities are added to pure silicon, it is called dopping

dopping: This is the process by which impurities is added to semi conductors in order to alter its electrical conductivity. The impurities is called dopants.

Adding gallium, boron, or indium to pure silicon or germanium will create a material with an excess of holes which is called a p-type material.

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