Patent ID: 8829546

Claim:
A solid state light emitting device, comprising: a light emitting diode comprising: an active region of epitaxial semiconductor material; and a pair of oppositely doped layers, both comprising epitaxial semiconductor material on opposite sides of said active region, said active region emitting light at a predetermined wavelength in response to an electrical bias across said doped layers; and an absorption layer of epitaxial semiconductor material integral to said light emitting diode and doped with at least one rare earth or transition element, said active region, doped layers and absorption layer arranged directly in succession to one another and on a growth substrate, said absorption layer absorbing at least some of the light emitted from said active region and re-emitting at least one different wavelength of light, wherein said absorption layer comprises a plurality of doped sections, each of said doped sections are doped with a different rare earth or transition element and emitting light in a distinct wavelength range.