Figure 6

(a) Electron and hole mobility versus 1/T2 plot fitted according to the Gaussian disorder model50 (b) α and β parameters plotted with different temperatures for PffBT4T-2OD:PC70BM and PffBT4T-2OD:bis-PDI based devices. In Figure (b), α and β parameters are extracted from temperature- and intensity-dependent J-V characteristics in supporting information (Figures S9, S10) and the solid line is a guideline for the eyes.