Figure 1. Structures of different dopant materials, indicating the coordinates in the CIE diagram.
Figure 2. Current density–voltage (J–V) and luminance–voltage (L–V) plots of devices A, B, and C.
Figure 3. Current and power efficiencies as functions of the luminance plot for devices A, B, and C.
Figure 4. Schematic representation of the device configuration.
Figure 5. The EL spectra of the WOLED (device D).
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