Abstract
A simplified hybrid white organic light-emitting diode (WOLED) employing a p-type interlayer is designed, simultaneously realizing high efficiency, high color rendering index (CRI), low efficiency roll-off, low voltage and stable color. The device exhibits maximum total efficiencies of 29.8cd/A and 20.9lm/W, which slightly decrease to 28.6cd/A and 16.5lm/W even at a high luminance of 5000cd/m2. Besides, a slight color-shift and a CRI of 85 at 100cd/m2 (3.65V) are obtained. Such superior results systematically demonstrate that the use of p-type interlayer is a new way to realize high-performance hybrid WOLEDs.
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