This post features an LED structure simulated in ATLAS. The goal will be to demonstrate why this structure may be considered an LED. Light Emitting Diodes and Laser Diodes both serve as electronic-to-photonic transducers. Of importance to the operation of LEDs is the radiative recombination rate.
The following LED structure is built using the following layers (top-down):
- GaAs: 0.5 microns, p-type: 1e15
- AlGaAs: 0.5 microns, p-type: 1e15, x=0.35
- GaAs: 0.1 microns, p-type: 1e15, LED
- AlGaAs: 0.5 microns, n-type: 1e18, x=0.35
- GaAs: 2.4 microns, n-type: 1e18
This structure uses alternating GaAs and AlGaAs layers.