Figure 2
From: Optical properties of as-grown and annealed InAs quantum dots on InGaAs cross-hatch patterns
20-K photoluminescence of the controlled QDs, the controlled CHP, and the QDs on CHP samples. (a) PL spectra of the controlled QDs (sample A, in red), the controlled CHP (B, green), and the QDs on CHP samples (C, black and D, blue) at 20 K. (b) The measured (blue) and simulated (black) PL spectra of sample D. Open symbols (circle) are multiple Gaussian function fits. The peak energies as indicated by the arrows from left to right originate from the [1-10]-QDs, the [110]-QDs, the first WL, the CHP, and the second WL. The symbols below the arrows correspond to the structures depicted in the schematic cross-sectional diagram to the left. The vertical axis is logarithmic in (a) and linear in (b). Spectra are offset for clarity.