Patent ID: 8723189

Claim:
A light emitting diode device comprising: a semiconductor substrate comprising a surface region; a semiconductor structure overlying the surface region, the semiconductor structure forms an active region of the light emitting diode device, said active region emitting electromagnetic radiation in an ultraviolet wavelength range, the semiconductor structure comprising two or more quantum well layers, and one or more separation layers, configured between the quantum well layers, the one or more separation layers being configured to have a first mode to act as one or more barrier regions separating a plurality of carriers in a quantum confined mode in each of the quantum well layers being provided on each side of the one or more separation layers; and a second mode to cause spreading of the plurality of carriers across each of the quantum well layers to increase an overlap integral of all 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.