Figure 5

Current-voltage characteristic curves of OLEDs with different films. Current-voltage characteristic curves of OLEDs with different films as hole injection layer. Inset: illustration of device structure based on RGO LB films.
Current-voltage characteristic curves of OLEDs with different films. Current-voltage characteristic curves of OLEDs with different films as hole injection layer. Inset: illustration of device structure based on RGO LB films.