Semiconductor properties

intentional introduction of impurities into an intrinsic semiconductor for the purpose of modulating its electrical properties

physical dimensions of unit cells in a crystal

dopant atom that, when added to a semiconductor, can form a n-type region

dopant atom that, when added to a semiconductor, can form a p-type region

A dopant (also called a doping agent) is a small amount of a substance added to a material to alter its physical properties, such as electrical or optical properties. The amount of dopant is typically very low compared to the material being doped.