Fig. 5.
Schematic of models for QD blinking. (a) Energy levels in the DCET model. Transitions from |G〉 to |L*〉 or from |D〉 to |D*〉 are driven by incident light. Transitions from |L*〉 to |G〉 are primarily radiative, whereas transitions from |D*〉 to |D〉 are primarily nonradiative. (b) Free energies of energy levels in the DCET model, as a function of reaction coordinate Q. Transitions from |L*〉 to |D〉 occur by electron transfer, at rate kr, when the system is at reaction coordinate Q‡. (c) Schematic of trapping mechanism in the Auger-assisted model. Holes are trapped in deep-band states through the promotion of an electron in the conduction band (CB). (d) Schematic of the suggested photo-assisted detrapping mechanism.