Figure 4From: Cooperative Effects in the Photoluminescence of (In,Ga)As/GaAs Quantum Dot Chain StructuresPL band asymmetry measured as difference , δ = E − Emax 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 temperaturesBack to article page