The strained In0.13Ga0.7As1-xNx (x = 0-0.01)/GaAs quantum wells (QWs) with 10 nm well thicknesses were grown by MOVPE at 500°C using dimethylhydrazine (DMHy) as the nitrogen source. The nitrogen was nonlinearly incorporated into the solid by increasing the partial pressure of DMHy in the vapor phase. The peak energy of photoluminescence (PL) was red-shifted by increasing the composition of nitrogen up to x =0.002 and showed a large band-gap bowing of - 82 eV. The as-grown In0.3Ga0.7As0.99N0.01 QW had a weak PL intensity of more than two orders of magnitude lower than that of In0.3Ga0.7As QW, but by annealing in a N2 atmosphere at 650°C, the PL intensity recovered and peaked at 1.26 μm at 10 K. The PL recovery seems to have been related to the depassivation of hydrogen. From a SIMS analysis, the as-grown In0.3Ga0.7As0.99N0.01 QW showed a hydrogen concentration as high as 6 × 1019 cm-3, but decreased to 2.5 × 1019 cm-3 after annealing in N2 for 1 h.
|Number of pages||5|
|Journal||Journal of Crystal Growth|
|Publication status||Published - 1998 Dec 15|
- Strained quantum well laser
ASJC Scopus subject areas
- Condensed Matter Physics