Novel hot electron light emitter

A device based on a PIN heterostructure with a quantum well in the intrinsic region is described. The main operation principle of the light emitting device is tested by calculating the electron and hole carrier densities in the quantum well. Dual wavelength emitter is produced using a device which is two back to back PIN. In the described device, choosing different wavelengths is achieved by undertaking different intermixing in a set of devices all now forward biased in the same way