Answers are grounded in this paper and cite their sources.
High-speed planar light-emitting diodes fabricated within a single high-mobility quantum well are demonstrated. Devices were fabricated by photolithography and wet chemical etching starting from p-type modulation-doped Al0.5Ga0.5As/GaAs heterostructures grown by molecular beam epitaxy. Electrical and optical measurements from room temperature down to 1.8 K show high spectral purity, high external efficiency, and extremely short recombination times of the order of 50 ps. Time-resolved electroluminescence measurements demonstrate subnanosecond modulation time scale.
No takes yet. Share an insight, caveat, or question.
A 2003 study studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: