Figure 4.

PL band asymmetry measured as difference , δ = EEmax for various temperatures. It is seen that low-temperature (T = 10 K) asymmetry is positive. The change of asymmetry sign evidences the appearance of the e1 − hh2 QD transition and the predominant temperature population of the shallow QD states at high temperatures

Mazur et al. Nanoscale Research Letters 2010 5:991-1001   doi:10.1007/s11671-010-9590-5