Figure 1From: Single-dot Spectroscopy of GaAs Quantum Dots Fabricated by Filling of Self-assembled Nanoholes a Top view AFM image of an AlGaAs surface after LDE with Al droplets at T = 620°C. Arrow “A” marks a shallow hole and “B” a deep hole. b Top view AFM image of an AlGaAs surface after LDE with Ga droplets at T = 620°C. c Profile and 3D view of the shallow hole “A” in (a). d Profile and 3D view of the deep hole “B” in (a), e Schematic cross-section of a shallow-hole QD (type I sample). f Schematic cross-section of a deep-hole QD (type II sample)Back to article page