Driftdiffusion simulation based on a 200 nm thick PM6:Y6 solar cell.[11] Currentvoltage characteristics for the cases with and without energetic disorder (denoted as traps and no traps, respectively), for the case of high (violet line) and normal mobility (red line). Transport-resistance-free curves (not shown) virtually coincide with the high mobility curves for both cases. The values of the charge carrier mobilities are given in b), and the recombination rate is plotted in c) as a function of applied voltage at 1 sun. Mobility is a strong function of applied voltage. The device with a higher mobility has a lower charge density, and hence, lower recombination rate, due to better carrier extraction; however as Vocis approached recombination equals generation and the recombination rates become equal.
