Multifunctional oxadiazole-based ultraviolet-emitting materials used as hosts for multicolor phosphorescence.

ABSTRACT: Highly efficient ultraviolet materials and host materials for organic light-emitting diodes (OLEDs) have been gaining increasing attention in recent years. In this study, three donor-acceptor (D-A) molecules with different HLCT properties were designed and synthesized using oxadiazole as an electron acceptor. Not only does the molecule m-PIOXZ exhibit efficient ultraviolet electroluminescence, but it can also serve as the host material for high-efficiency phosphorescent OLEDs (PhOLEDs) with low roll-off. As a result, high external quantum efficiency (EQE) and long operational lifetimes are obtained in green, yellow and red emissive PhOLEDs, providing new insights for developing high-efficiency, low roll-off, and full-color OLEDs.

SUBMITTER: Chu L 

PROVIDER: S-EPMC11848193 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature