Organic light-emitting device having high efficiency and long lifespan

An organic light emitting diode, comprising:

• a first electrode;
• a second electrode facing the first electrode;
• and
• a light-emitting layer disposed between the first electrode and the second electrode,
• wherein the light-emitting layer contains a host and a dopant, the host including at least one of anthracene compounds represented by the following Chemical Formula A, the dopant comprising at least one of the compounds represented by the following Chemical Formulas D-6 to D-7:
• wherein,
• R1 to R21, which are same or different, each are independently any one selected from the group consisting of a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl of 1 to 30 carbon atoms, and a substituted or unsubstituted aryl of 6 to 50 carbon atoms;
• R is a hydrogen atom or a deuterium atom;
• and
• n is an integer of 1 to 5, wherein when n is 2 to 5, the corresponding R's are same or different and are independently a hydrogen atom or a deuterium atom, and
• wherein,
• T4 to T6 are same or different and are each independently a substituted or unsubstituted aromatic hydrocarbon ring of 6 to 50 carbon atoms, or a substituted or unsubstituted heteroaromatic ring of 2 to 40 carbon atoms;
• Y4 is any one selected from N—R61, CR62R63, O, S, and SiR64R65;
• Y5 is any one selected from N—R66, CR67R68, O, S, and SiR69R70;
• Y6 is any one selected from N—R71, CR72R73, O, S, and SiR74R75;
• R61 to R75 are same or different and are each independently any one selected from a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl of 1 to 30 carbon atoms, a substituted or unsubstituted aryl of 6 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl of 3 to 30 carbon atoms, a substituted or unsubstituted heteroaryl of 2 to 50 carbon atoms, a substituted or unsubstituted alkoxy of 1 to 30 carbon atoms, a substituted or unsubstituted aryloxy of 6 to 30 carbon atoms, a substituted or unsubstituted alkylthioxy of 1 to 30 carbon atoms, a substituted or unsubstituted arylthioxy of 5 to 30 carbon atoms, a substituted or unsubstituted alkylamine of 1 to 30 carbon atoms, a substituted or unsubstituted arylamine of 5 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl of 1 to 30 carbon atoms, a substituted or unsubstituted arylsilyl of 5 to 30 carbon atoms, a cyano, and a halogen atom,
• a linkage can be formed between R62 and R63, between R64 and R65, between R67 and R68, between R69 and R70, between R72 and R73, and/or between R74 and R75 to form respective aliphatic or aromatic mono- or polycyclic rings,
• R61 to R75 are each linked to any one ring moiety of T4 to T6 to additionally an aliphatic or aromatic mono- or polycyclic ring,
• wherein the term “substituted” in the expression “substituted or unsubstituted” used for compounds of Chemical Formulas A, D6, and D7 means having at least one substituent selected from the group consisting of a deuterium atom, a cyano, a halogen atom, a hydroxy, a nitro, an alkyl of 1 to 24 carbon atoms, a halogenated alkyl of 1 to 24 carbon atoms, an alkenyl of 1 to 24 carbon atoms, an alkynyl of 1 to 24 carbon atoms, a cycloalkyl of 3 to 24 carbon atoms, a heteroalkyl of 1 to 24 carbon atoms, an aryl of 6 to 24 carbon atoms, an arylalkyl of 7 to 24 carbon atoms, an alkylaryl of 7 to 24 carbon atoms, a heteroaryl of 2 to 24 carbon atoms, a heteroarylalkyl of 2 to 24 carbon atoms, an alkoxy of 1 to 24 carbon atoms, an alkylamino of 1 to 24 carbon atoms, a diarylamino of 12 to 24 carbon atoms, an diheteroarylamino of 2 to 24 carbon atoms, an aryl(heteroaryl)amino of 7 to 24 carbon atoms, an alkylsilyl of 1 to 24 carbon atoms, an arylsilyl of 6 to 24 carbon atoms, an aryloxy of 6 to 24 carbon atoms, and an arylthionyl of 6 to 24 carbon atoms.