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Free energy as a function of configuration coordinate (Q) for electron transfer from one of the QD exited states (red) to a delocalized conduction band (blue). The dotted (crossing) curves are parabolic diabatic free energy surfaces in the weak-coupling limit. The solid anticrossing curves (purple) are adiabatic free energy surfaces of the coupled donor-acceptor system. Δ is electronic coupling strength and λ the reorganization energy.
