Patent ID: 8368050
Filing Date: 2013-02-05
Classification: H01L,H01S

Abstract:
1. A light-emitting diode comprising: at least one quantum well sandwiched between a first intrinsic semiconductor layer and a second intrinsic semiconductor layer; a first heterostructure disposed on a surface of the first intrinsic semiconductor layer; a second heterostructure disposed on a surface of the second intrinsic semiconductor layer, wherein the second heterostructure is located opposite the first heterostructure; and a metal structure disposed on a surface of the light-emitting diode, wherein electron-plasma oscillations of surface plasmon polaritons formed along the interface between the metal structure and the surface of the light-emitting diode extend into the at least one quantum well increasing the spontaneous emission rate of the transverse magnetic field component of electromagnetic radiation emitted from the at least one quantum well via the Purcell effect, wherein the second heterostructure comprises: a first compositionally graded semiconductor layer disposed on the surface of the second intrinsic semiconductor layer; a first intermediate semiconductor layer disposed on a surface of the first compositionally graded semiconductor layer; and a second compositionally graded semiconductor layer disposed on a surface of the first intermediate semiconductor layer.