HETEROCYCLIC COMPOUNDS EXHIBITING THERMALLY ACTIVATED DELAYED FLUORESCENCE (TADF) AND THEIR USE IN ELECTROLUMINESCENT DEVICES

摘要

An organic thermally activated delayed fluorescence (TADF) compound selected from the group consisting of compounds according to formula (Ia) and formula (Ib): wherein: Het is a heteroaryl group containing at least one heteroatom; n(D) denotes n donor groups D bonding to the heteroaryl group Het; n is at least 1; and -a and -b denotes bonding to another group.