Patent ID: 8304805

Claim:
A photonic device comprising: a substrate; a dielectric material including a first set of at least two openings and a second set of at least two openings, each of the openings in the first set and the second set exposing a portion of the substrate and having an aspect ratio of at least 1; a first diode comprising: a first bottom diode material comprising a first semiconductor material that is lattice mismatched to the substrate, and wherein the first semiconductor material occupies the first set of at least two openings and is coalesced above the first set of at least two openings; a first top diode material; and a first active diode region between the first top diode material and the first bottom diode material; and a second diode comprising: a second bottom diode material comprising a second semiconductor material that is lattice mismatched to the substrate, and wherein the second semiconductor material occupies the second set of at least two openings and is coalesced above the second set of at least two openings; a second top diode material; and a second active diode region between the second top diode material and the second bottom diode material; wherein at least one of (i) the second bottom diode material is different from the first bottom diode material, (ii) the second active diode region comprises a material different from a material of the first active diode region, (iii) the second top diode material is different from the first top diode material, or (iv) a combination thereof.