Figure 2.

PL spectra for 16 mW/cm2 <Pexc < 244.3 W/cm2 measured for islands on a pit-patterned substrate. Only a minor shift of the island PL with increasing Pexc is observed. A new peak of unknown origin appears for Pexc ≥ 18 W/cm2 at 898 meV. The detector cut-off at 0.77 eV is indicated by the dashed line. The spectra are shifted vertically for clarity

Brehm et al. Nanoscale Research Letters 2010 5:1868-1872   doi:10.1007/s11671-010-9713-z