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- W4387598031 abstract "In consideration of energy economization and light quality, concurrently attaining high external quantum efficiency (ηext ) and high color rendering index (CRI) is of high significance for the commercialization of hybrid white organic light-emitting diodes (WOLEDs) but is challenging. Herein, a blue luminescent molecule (2PCz-XT) consisting of a xanthone acceptor and two 3,6-diphenylcarbazole donors is prepared, which exhibits strong delayed fluorescence, short delayed fluorescence lifetime, and excellent electroluminescence property, and can sensitize green, orange, and red phosphorescent emitters efficiently. By employing 2PCz-XT as sensitizer and phosphorescent emitters as dopants, efficient two-color and three-color WOLED architectures with ultra-thin phosphorescent emitting layers (EMLs) are proposed and constructed. By incorporating a thin interlayer to modulate exciton recombination zone and reduce exciton loss, high-performance three-color hybrid WOLEDs are finally achieved, providing a high ηext of 26.8% and a high CRI value 83 simultaneously. Further configuration optimization realizes a long device operational lifetime. These WOLEDs with ultra-thin phosphorescent EMLs are among the state-of-the-art hybrid WOLEDs in the literature, demonstrating the success and applicability of the proposed device design for developing robust hybrid WOLEDs with superb efficiency and color quality." @default.
- W4387598031 created "2023-10-14" @default.
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- W4387598031 date "2023-10-12" @default.
- W4387598031 modified "2023-10-14" @default.
- W4387598031 title "Simultaneously Realizing High Efficiency and High Color Rendering Index for Hybrid White Organic Light‐Emitting Diodes by Ultra‐Thin Design of Delayed Fluorescence Sensitized Phosphorescent Layers" @default.
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- W4387598031 doi "https://doi.org/10.1002/smll.202305589" @default.
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