Patent ID: 9318652
Filing Date: 2016-04-19
CPC Classification: B82Y,G06F,H01L,H01S

Claim Text:
1. A light emitting diode device comprising: a semiconductor substrate comprising a surface region; a semiconductor structure overlying the surface region, the semiconductor structure comprising an active region of the light emitting diode device, said active region being configured to emit electromagnetic radiation in an ultraviolet wavelength range, the semiconductor structure comprising two quantum well layers, and at least one separation layer being configured between the quantum well layers, the separation layer being configured to have a first mode to act as a barrier region for separating a plurality of carriers in a quantum confined mode in each of the quantum well layers being provided on each side of the separation layer; and a second mode configured to cause spreading of the plurality of carriers across each of the quantum well layers to increase an overlap integral of the plurality of carriers from a first value to a second value, the second value being greater than the first value, and the first value being associated with the first mode and the second value being associated with the second mode; wherein the second mode relates to a higher energy efficiency of the light emitting diode device than configured to operate in the first mode when operating each mode in a same current density such that the second mode increases the overlap integral of the plurality of carriers from the first value to the second value; wherein the separation layer is tunable to an overlap of electron and hole wave functions over the active region.