Density Control of Quantum Dots

On the other hand, low QD density is desirable for some devices that use individual QDs, such as single-photon sources. However, precise control of low-density QDs is difficult because the growth mode transition from 2D to 3D occurs rapidly. To realize low-density growth, the surface concentration of adatoms should be suppressed, and the supply amount of growth materials should be precisely controlled. In Sect. 3.5.2, an intermittent growth method is presented for the controlled formation of low-density InAs/GaAs QD. 

1 Sb-Mediated Growth of High-Density InAs/GaAs Quantum Dots 

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