SIMS profiles of around active region for samples A, B, C, and D.
(a) Normalized RT PL spectra for the samples A, B, C, and D. (b) 10 K PL spectra for the samples C, D, and E.
(110) DF X-TEM images obtained with diffraction vector for samples (a) C, (b) D, and (c) E.
The PL spectra for the sample C in the temperature range from 10 to 300 K.
Temperature dependences of the PL peak energy for the samples C, D, and E in the temperature range from 10 to 300 K. Solid lines are fitted curves with Eq. (1).
Integrated PL intensity (log scale) plotted as a function of reciprocal temperature for the samples C, D, and E.
Detailed description of the samples studied.
Summary of sample parameters; calculated band-gap energy , photon energy , coupling constant of electron–lattice interaction , localization energy , and thermal activation energies and .
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