Figure 4.

Schematic diagrams representing the dynamics of the charge carriers in SCNCs. a) Two ways for generating an exciton: by photon absorption, in which an electron is excited to the conduction band, thereby leaving a hole in the valence band, or by injecting electrons and holes into the conduction band and valence band, respectively. b) A thermalization process, in which a high‐energy exciton decays to the band gap. c) Exciton recombination routes: radiatively, by emitting a photon with an energy equivalent to the band gap; nonradiatively, by decaying to a trap state; or transferring the band gap energy to excite a third charge carrier (Auger recombination).