Patent ID: 7301221

Claim:
A semiconductor junction, comprising: a first conductivity type semiconductor region, wherein the first conductivity type semiconductor region includes a first group of three or more impurity elements, wherein at least one of the first group of impurity elements includes a first wherein the first group of impurity elements are chosen with complementary radii in respective amounts where a weighted average dopant atomic radius in the first group of impurity elements is substantially equal to an average atomic radius of an undoped host semiconductor lattice; a second conductivity type semiconductor region located substantially within the first conductivity type semiconductor region, wherein the second conductivity type semiconductor region includes a second group of three or more impurity elements, wherein in the second group of impurity elements are chosen with complementary radii in respective amounts where a weighted average dopant atomic radius in the second group of impurity elements is substantially equal to an average atomic radius of an undoped host semiconductor lattice.