Organic light-emitting diode comprising amine-based compounds and pyrene-based compounds

An organic light-emitting device comprising:

• a first electrode;
• a second electrode;
• and
• an organic layer between the first electrode and the second electrode, wherein the organic layer comprises an emission layer comprising at least one amine-based compound represented by Formula 1 and at least one pyrene-based compound represented by Formula 2:
• wherein, in Formula 1 and 2:
• X1 to X4 are each independently a substituted or unsubstituted C3-C10 cycloalkylene group, a substituted or unsubstituted C2-C10 heterocycloalkylene group, a substituted or unsubstituted C3-C10 cycloalkenylene group, a substituted or unsubstituted C2-C10 heterocycloalkenylene group, a substituted or unsubstituted C6-C60 arylene group, or a substituted or unsubstituted C2-C60 heteroarylene group;
• n1 to n4 are each independently an integer of 0 to 5, and when n1 is an integer of 2 or more, the 2 or more X1 groups are the same or different, when n2 is an integer of 2 or more, the 2 or more X2 groups are the same or different, when n3 is an integer of 2 or more, the 2 or more X3 groups are the same or different, and when n4 is an integer of 2 or more, the 2 or more X4 groups are the same or different;
• Y1 to Y4 are each independently a substituted or unsubstituted C3-C10 cycloalkyl group, a substituted or unsubstituted C2-C10 heterocycloalkyl group, a substituted or unsubstituted C3-C10 cycloalkenyl group, a substituted or unsubstituted C2-C10 heterocycloalkenyl group, a substituted or unsubstituted C6-C30 aryl group, or a substituted or unsubstituted C2-C30 heteroaryl group;
• Z1 and Z2 are each independently an electron transporting group and are each independently a substituted or unsubstituted C2-C10 heterocycloalkyl group, a substituted or unsubstituted C2-C10 heterocycloalkenyl group, or a substituted or unsubstituted C2-C60 heteroaryl group;
• R1 to R4 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine, a hydrazone, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C1-C60 alkyl group, a substituted or unsubstituted C2-C60 alkenyl group, a substituted or unsubstituted C2-C60 alkynyl group, a substituted or unsubstituted C1-C60 alkoxy group, a substituted or unsubstituted C3-C10 cycloalkyl group, a substituted or unsubstituted C2-C10 heterocycloalkyl group, a substituted or unsubstituted C3-C10 cycloalkenyl group, a substituted or unsubstituted C2-C10 heterocycloalkenyl group, a substituted or unsubstituted C6-C60 aryl group, a substituted or unsubstituted C6-C60 aryloxy group, a substituted or unsubstituted C6-C60 arylthio group, or a substituted or unsubstituted C2-C60 heteroaryl group;
• a1 to a4 are each independently an integer of 0 to 4, and when a1 is an integer of 2 or more, the 2 or more R1 groups are the same or different, when a2 is an integer of 2 or more, the 2 or more R2 groups are the same or different, when a3 is an integer of 2 or more, the 2 or more R3 groups are the same or different, and when a4 is an integer of 2 or more, the 2 or more R4 groups are the same or different;
• and
• b1 and b2 are each independently an integer of 0 or 1.