Organic light-emitting diode

An organic light-emitting diode, comprising:

• a substrate;
• a first electrode on the substrate;
• a second electrode facing the first electrode;
• and
• an emission layer between the first electrode and the second electrode, the emission layer including an anthracene-based compound represented by Formula 1, below, and a condensed ring compound represented by Formula 20, below:
• wherein, in Formulae 1 and 20:
• n is 0 or 1;
• R1 to R6 are each independently selected from a substituted or unsubstituted C1-C60 alkyl group, a substituted or unsubstituted non-condensed ring group in which a number of ring forming atoms is in a range of 3 to 10, and a substituted or unsubstituted condensed ring group in which two or more rings are condensed, and when n is 0, at least one of R1 to R3 is a substituted or unsubstituted condensed ring group in which two or more rings are condensed, and when n is 1, at least one of R1 to R6 is a substituted or unsubstituted condensed ring group in which two or more rings are condensed;
• L1, L2, Ar1, and Ar2 are each independently selected from a substituted or unsubstituted C3-C10 cycloalkylene group, a substituted or unsubstituted C3-C10 cycloalkenylene group, a substituted or unsubstituted C3-C10 heterocycloalkylene group, a substituted or unsubstituted C3-C10 heterocycloalkenylene group, a substituted or unsubstituted C6-C60 arylene group, and a substituted or unsubstituted C2-C60 heteroarylene group;
• c and d are each independently an integer of 1 to 3;
• R11, R12, R43, and R44 are each independently selected from 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 group, a hydrazone group, a carboxyl group or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid 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 C3-C10 cycloalkenyl group, a substituted or unsubstituted C3-C10 heterocycloalkyl group, a substituted or unsubstituted C3-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, a substituted or unsubstituted C2-C60 heteroaryl group, —N(Q1)(Q2), and —Si(Q3)(Q4)(Q5), wherein Q1 to Q5 are each independently a hydrogen atom, a C1-C10 alkyl group, a C6-C20 aryl group, or a C2-C20 heteroaryl group;
• a and b are each independently an integer of 1 to 4;
• R41 and R42 are each independently selected from 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 group, a hydrazone group, a carboxyl group or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid 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 C3-C10 cycloalkenyl group, a substituted or unsubstituted C3-C10 heterocycloalkyl group, a substituted or unsubstituted C3-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, and a substituted or unsubstituted C2-C60 heteroaryl group;
• i and j are each independently an integer of 0 to 3;
• and
• Ar3 and Ar4 are each independently represented by one of Formulae 7B, 7D, or 7F below:
• in Formulae 7B, 7D, and 7F,
• Z31 to Z44 are each independently selected from 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 group, a hydrazone group, a carboxyl group or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid 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 C3-C10 cycloalkenyl group, a substituted or unsubstituted C3-C10 heterocycloalkyl group, a substituted or unsubstituted C3-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, a substituted or unsubstituted C2-C60 heteroaryl group, —N(Q51)(Q52), and —Si(Q53)(Q54)(Q55), wherein Q51 to Q55 are each independently a hydrogen atom, a C1-C10 alkyl group, a C6-C20 aryl group, or a C2-C20 heteroaryl group, and two or more of Z31 to Z44 are bindable to each other to selectively form a saturated or unsaturated ring having 6 to 20 carton atoms;
• w1 is an integer of 1 to 4;
• and
• w2 is an integer of 1 to 5.