Figure 2From: Structural and optical properties of position-retrievable low-density GaAs droplet epitaxial quantum dots for application to single photon sources with plasmonic optical coupling AFM images (3 μm × 3 μm) of a surface. (a) 22-nm, (b) 45-nm, and (c) 70-nm-thick Al0.3Ga0.7As capping for low-density GaAs DE QDs.Back to article page