Fig. 1. DDQ molecular structure diagram and structure diagram and energy levels of the OPDs

Fig. 2. J-V curves and EQE-V curves of the four devices

Fig. 3. C-V and C^-2-V characteristics of devices A and C

Fig. 4. Trap concentrations under different doping concentrations under illumination

Fig. 5. PL spectra under different doping concentrations

Fig. 6. J-V curves of device C under illumination with different light intensity

Fig. 7. J_ph-P_in of device C under the bias of -1.0 V