A structure in which a thin layer, a few nanometers thick, with a small band gap is sandwiched between layers with a larger band gap. It confines carriers to promote recombination and is used as the active layer of LEDs and lasers.
Field: Compound semiconductors
In a quantum well, carriers are confined in an emitting layer only a few nm thick, so electrons and holes meet readily and recombine efficiently.
Which correctly describes the quantum well structure used i…2DEG (two-dimensional electron gas) Alloy semiconductor Direct band gap Efficiency droop Ga2O3 (gallium oxide) GaAs (gallium arsenide) GaN (gallium nitride) HEMT (high-electron-mobility transistor) III-V compound semiconductor InP (indium phosphide)