An In0.06Ga0.94N multiple-quantum-well (MQW) laser diode (LD) structure was shown to have atomically flat interfaces and very small compositional inhomogeneity. However, excitons were confirmed to be localized at the exponential-tail type potential minima in the density of states. Spontaneous emission was assigned as being due to the recombination of localized excitons while the stimulated emission seemed to come from the continuum states energetically higher than the mobility edge.
|Number of pages||7|
|Journal||Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures|
|Publication status||Published - 2001 Nov|