Fig. 4From: Detecting Spatially Localized Exciton in Self-Organized InAs/InGaAs Quantum Dot Superlattices: a Way to Improve the Photovoltaic EfficiencyPL spectrum measured at low temperature (12 K) from the five-layer stacked InAs/InGaAs QD heterostructure. A line shape analysis of spectra proves that the QD PL signal is a convolution of two Gaussian-shaped peaks as shown by solid lines Back to article page