Patent ID: 8866146

Claim:
A method of fabricating a LED comprising: growing a bottom cladding layer of a selected crystalline semiconductor alloy, wherein the alloy is Ga x In 1-x P and includes a lattice having a disordered arrangement of isovalent alloy atoms occupying random sites within the crystalline lattice; growing a first active layer above the bottom cladding layer wherein the first active layer comprises the crystalline semiconductor alloy wherein the alloy includes a lattice having a partially ordered arrangement of isovalent alloy atoms occupying nearly random sites within the crystalline lattice having a selected n or p type dopant; growing a second active layer above the first active layer wherein the second active layer comprises the crystalline semiconductor alloy, wherein the alloy includes a lattice having a partially ordered arrangement of isovalent alloy atoms occupying nearly random sites within the crystalline lattice having an n or p type dopant opposite the dopant of the first active layer; and growing a top cladding layer above the second active layer wherein the top cladding layer comprises the crystalline semiconductor alloy, wherein the alloy includes a lattice having a disordered arrangement of isovalent alloy atoms occupying random sites within the crystalline lattice.