Display device with anthracene and triazine derivatives

A device comprising:

• an anode;
• a cathode;
• and
• a luminescent region between the cathode and the anode, wherein the luminescent region comprises an anthracene derivative compound, a triazine derivative compound, and an additional anthracene or triazene derivative compound, wherein the anthracene derivative compounds are selected from the group consisting of formula I(A)(4) and of formula I(D):
• wherein substituents R1, R2, R3, and R4 are each independently selected from the group consisting of:
• hydrogen;
• alkyl of from 1 to 24 carbon atoms;
• alkoxy of from 1 to 9 carbon atoms;
• triphenylsilyl;
• aryl of from 6 to 20 carbon atoms that is optionally substituted;
• heteroaryl of from 5 to 24 carbon atoms that is optionally substituted;
• halogen;
• and cyano group;
• wherein R15 and R16 are independently selected from the group consisting of hydrogen, an alkyl group with from 1 to about 6 carbon atoms, an aryl group with about 6 to about 30 carbon atoms;
• wherein X and Y are independently selected from the group consisting of hydrogen, an alkyl group with from 1 to about 6 carbon atoms, an aryl group with about 6 to about 30 carbon atoms, an alkoxy group with from 1 to about 6 carbon atoms, a halogen, a cyan group
• wherein the triazine derivative compounds are selected from the group consisting of formula II(A) and of formula II(B):
• wherein Ar1, Ar2, AR3, and Ar4 are each independently aryl of from 6 to about 20 carbon atoms that is optionally substituted;
• wherein R17 to R18 are independently selected from the group consisting of hydrogen, an aliphatic with from 1 to about 6 carbon atoms, an alkoxy group with from 1 to about 6 carbon atoms, a halogen, a cyano group.