Line Plot from Scientific Research

Sketch of the relationship between the free carrier and CT state DOS. The red shaded regions indicate the electron and hole distributions given by the overlap of their respective DOS (gn(E) andgp(E)) and Fermi-Dirac occupation functions (fn(E) andfp(E)); the gradient in the shading conveys the energy-dependent mobility of each carrier. Because low energy CT states are formed from tail state electrons and holes with low mobility, and the Langevin recombination rate is proportional to mobility, low energy CT states respond more slowly to the MELS perturbation than high energy CT states.

DOI