31634-72-7Relevant academic research and scientific papers
Thermally activated delayed fluorescence host material, preparation method and applications thereof
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Paragraph 0088; 0092-0093, (2018/07/30)
The present invention provides a thermally activated delayed fluorescence host material, a preparation method and applications thereof, wherein a thermally activated delayed fluorescence material based on 9,10-dihydro-9,10-o-benzo-9,10-diphospha anthracene-9,10-dioxide is used as a precursor and is modified with different amounts of fluorine atoms so as to prepare the thermally activated delayed fluorescence host material. According to the present invention, the thermally activated delayed fluorescence electroluminescent device prepared by using the thermally activated delayed fluorescence host material as the electroluminescent material has the turn-on voltage of less than 3.0 V, the maximum external quantum efficiency of higher than 12%, the maximum current efficiency of greater than 25cd.A-1>, and the maximum power efficiency of greater than 20 lm.W.
