Patent ID: 7465954

Claim:
A radiation-emitting device comprising: a first electrode: a second electrode; at least one nanowire extending between the first electrode and the second electrode, the nanowire being structurally and electrically coupled to the first electrode and the second electrode, the nanowire comprising a double-heterostructure semiconductor device configured to emit electromagnetic radiation when a voltage is applied across the nanowire between the first electrode and the second electrode a first longitudinal segment comprising an n-type semiconductor material; a second active longitudinal segment comprising a first p-type semiconductor material, the second active longitudinal segment being structurally and electrically coupled to an end of the first longitudinal segment; and a third longitudinal segment comprising a second p-type semiconductor material, the third longitudinal segment being structurally and electrically coupled to an end of the second active longitudinal segment opposite the first longitudinal segment; and wherein the first p-type semiconductor material differs from both the n-type semiconductor material and the second p-type semiconductor material.