dopant

Etymology

dope + -ant

noun

1. (materials science) A substance added in small amounts to a pure material, such as semiconductor, to alter its original electrical or optical properties; a doping agent
   It should be noted that even though both types of disorder can be annealed at temperatures well below those where diffusion of the dopant species occurs, there are still defects present. 1970, James W[alter] Mayer, Lennart Eriksson, John A[rthur] Davies, “General Features of Ion Implantation”, in Ion Implantation in Semiconductors: Silicon and Germanium, New York, N.Y.: Academic Press, →OCLC, page 5