Publication | Closed Access
A six-carbazole-decorated cyclophosphazene as a host with high triplet energy to realize efficient delayed-fluorescence OLEDs
164
Citations
64
References
2013
Year
EngineeringHigh Triplet EnergyOrganic ElectronicsGreen Tadf-oledsOrganic ChemistryChemistryLuminescence PropertyLight-emitting DiodesThermally Activated Delayed FluorescencePhotophysical PropertySix-carbazole-decorated CyclophosphazenePhotochemistryBiomolecular EngineeringOrganic Charge-transfer CompoundWhite OledEffective HostApplied PhysicsEfficient Delayed-fluorescence OledsOptoelectronicsPhosphorescence
A high triplet energy (ET) host material, hexakis(9H-carbazol-9-yl)cyclotriphosphazene (PzCz), is used in high-efficiency organic light-emitting diodes (OLEDs). PzCz (ET = 3.00 eV) functions as an effective host for thermally activated delayed fluorescence (TADF) molecules. Highest external electroluminescence quantum efficiencies over 15% and 18% are achieved for blue-green and green TADF-OLEDs, respectively.
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