27.2: Single Dopant p‐i‐n White Organic Light Emitting Devices

We demonstrate efficient, low operating voltage white organic light-emitting devices (WOLEDs) employing an emissive region containing a single phosphorescent dopant, platinum(II)(2-(4′,6′-difluorophenyl)pyridinato-N, C2′)(2,4-pentanedionato). The WOLED exhibited peak external quantum and power efficiencies of (4.8±0.5)% and (11±1.0)lm/W, respectively, and had color coordinates of (0.34, 0.43) and a color rendering index value of 71.