Research Article

Highly Efficient White Organic Light-Emitting Diodes with Controllable Excitons Behavior by a Mixed Interlayer between Fluorescence Blue and Phosphorescence Yellow-Emitting Layers

Figure 4

The relationships of (a) current efficiency versus current density and (b) power efficiency versus current density of HWOLEDs (Devices A, B, C, D, and E).
831765.fig.004a
(a)
831765.fig.004b
(b)