Patent ID: 8748862

Claim:
A light emitting diode comprising: a substrate having a top surface; a light generating layer that is formed on the top surface of the substrate, the light generating layer including a quantum well layer having a compound semiconductor comprising at least one element selected from group II elements and at least one element selected from group VI elements, the compound semiconductor being capable of emitting light in green spectrum, the light generating layer further including a barrier layer formed on at least one side of the quantum well layer, wherein the barrier layer has a composition and lattice constant effective to reduce an internal field formed across the quantum well region by electrical polarization and piezoelectric fields, wherein the light generating layer is capable of emitting light substantially perpendicular to the quantum well through the barrier layer so that the light that is emitted substantially perpendicular to the quantum well is the primary output of the light emitting diode; a first ion-doping region formed laterally adjacent a first side of the light generating layer; and a second ion-doping region formed laterally adjacent a second side of the light generating layer; a first electrode formed on the first ion-doping region; and a second electrode formed on the second ion-doping region; wherein the quantum well layer directly contacts the first and second ion-doping regions so that carriers can be laterally injected from the first and second ion-doping regions to the light generating layer.