Figure 4

OM images with UV exposure of QDs film on the TFB film and the FIB-SEM images of the ITO/PEDOT: PSS/TFB/QD/TPBi/LiF/Al structures cross-section of (a) 120 °C, (b) 150 °C, (c) 180 °C, and (d) 210 °C annealing condition. The QDs film was annealed at 100 °C after spin-coating.