Doping with arsenic creates an N-type semiconductor by introducing extra electrons to the material.
Doping involves adding impurities to a semiconductor material to control its conductivity. In the case of creating an N-type semiconductor, impurities like arsenic are added. Arsenic, with an extra electron compared to the semiconductor atoms, acts as a donor impurity, introducing more electrons into the material, making it negatively charged and creating an N-type semiconductor.
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