Fig. 6: Simulation results.

a Hole-mobility simulation, from Gaussian disorder theory: μ_p = μ_o,p (1 + α (n_p/N_site)^0.50), where n_p is hole density, μ_o,p is limiting hole mobility at low density, α is hole-density coefficient, and N_site is transport site density. For parameter values, see caption of Table 1. b Drift–diffusion–generation simulation: red dots, simulation; blue line, experiment from Fig. 5b.