Figure 1: Quantum mechanical modelling of charge carriers in quantum dot artificial atoms.
From: Mapping the spatial distribution of charge carriers in quantum-confined heterostructures
(a) Cross-sectional views of a 3.8-nm CdTe quantum dot and its 1S(e), 1S(h) and 2S(h) wavefunctions; (b) corresponding wavefunction (
) and radial distribution function (
) plots; and (c) steady-state absorption spectrum showing the 1st exciton 1S(h)→1S(e) and the 2nd exciton 2S(h)→1S(e) transitions. The energy band diagram in the inset depicts these absorption transitions between quantum-confined electron (e) and hole (h) energy states. Black lines indicate potential energy wells in the CB and VB. For clarity, energy levels are not drawn to scale and higher energy levels are omitted.
