Abstract
We have developed highly efficient red, green and blue (RGB) top-emitting organic light-emitting devices (TOLEDs) by using Ag as anode and cathode. We optimized microcavity effect in the devices by tuning suitable optical length for RGB emissions. A very saturated RGB color with CIE coordinates of (0.646, 0.353), (0.227, 0.721) and (0.135, 0.056) for RGB respectively were demonstrated and shown a color gamut of NTSC 102%. We also introduced a new hole-injection layer to get better carrier balance in the TOLEDs with which one of the best efficiencies for red was achieved at 37.5 cd/A.
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