Abstract

Unlike the early recognition of the improved performances of quantum wells in optoelectronic devices, there is still no clear demonstration of similar gains from quantum wires, as one would expect from this further step in the spectral concentration of the oscillator strength. It is even far worse for quantum boxes where a universal collapse of the photoluminescence (PL) yield is observed for lateral sizes below ~100 nm, i.e. for quantization energies way below the ~20 meV required for improved room-temperature operation.

© 1993 Optical Society of America