Patent ID: 7642562

Claim:
A resonant-cavity light-emitting diode comprising: a) a substrate; b) a layered structure deposited on the substrate, comprising: i) an n-type bottom-side distributed Bragg reflector; ii) a top-side distributed Bragg reflector; iii) a resonant cavity located between the bottom-side distributed Bragg reflector and the top-side distributed Bragg reflector, comprising a light-emitting quantum dot active region including a plurality of self-organized quantum dots; and iv) a p-n junction, which is capable of providing electrons and holes to the active region under forward bias; c) an n-ohmic contact located on a bottom surface of the substrate; d) an array of mesa structures comprising the layered structure and a p-ohmic contact located on a portion of a top surface of each of the mesa structures, wherein each mesa structure is a discrete device; and e) a quantum well, wherein an absorption peak of the quantum well is shifted to a shorter wavelength than a wavelength of a ground state luminescence of the quantum dots, and wherein the absorption peak of the quantum well approximately coincides with a wavelength of the excited-state luminescence of the quantum dot active region; wherein an emission spectrum of the resonant-cavity light-emitting diode includes a main maximum of the emission spectrum which falls into a spectral range from approximately 1.15 to 1.35 μm; and wherein an intensity of maxima, other than the main maximum of the emission spectrum, is less than or equal to 1% of an intensity of the main maximum.