Organic light-emitting diode with high efficiency

An organic light-emitting diode, comprising:

• a first electrode;
• a second electrode facing the first electrode;
• and
• a light-emitting layer and an electron transport layer sequentially arranged between the first and the second electrode,
• wherein the light-emitting layer contains at least one of the amine compounds represented by following Chemical Formula A or Chemical Formula B, and the electron transport layer contains at least one of the compounds represented by the following Chemical Formula E:
• wherein,
• A1, A2, E, and F may be the 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, wherein two adjacent carbon atoms within the aromatic ring A1 and two adjacent carbon atoms within the aromatic ring A2 form a 5-membered fused ring with a carbon atom to which the substituents R1 and R2 are both bonded;
• linkers L1 to L12 may be the same or different, and are each independently selected from among a single bond and substituted or unsubstituted arylene of 6 to 60 carbon atoms;
• M is any one selected from among N—R3, CR4R5, O, and S;
• R1 to R5, and Ar1 to Ar8 may be the same or different, and are each independently any one selected from among hydrogen, deuterium, 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 alkylsilyl of 1 to 30 carbon atoms, a substituted or unsubstituted arylsilyl of 6 to 30 carbon atoms, a substituted or unsubstituted alkylgermanium of 1 to 30 carbon atoms, a substituted or unsubstituted arylgermanium of 6 to 30 carbon atoms, a cyano, a nitro, and a halogen, with the proviso that R1 and R2 may be bonded to each other to form a mono- or polycyclic aliphatic or aromatic ring, which may be a heterocyclic ring containing at least one heteroatom selected from among N, O, P, Si, and S as a ring member;
• p1 to p4, r1 to r4, and s1 to s4 are each independently an integer of 1 to 3, with the proviso that when any of them is 2 or greater, the corresponding linkers may be the same or different,
• in Chemical Formula A, x is 1, and y and z are the same or different and are each independently an integer of 0 or 1 wherein y+z is not zero;
• in Chemical Formula B, x is 1, and y and z are the same or different and are each independently an integer of 0 or 1;
• and
• respective rings may be formed through linkages between Ar1 and Ar2, between Ar3 and Ar4, between Ar5 and Ar6, and between Ar7 and Ar8;
• two adjacent carbon atoms of the A2 ring moiety of Chemical Formula A may occupy respective positions * of Structural Formula Q1 to form a fused ring;
• and
• two adjacent carbon atoms of the A1 ring moiety of Chemical Formula B may occupy respective positions * of structural Formula Q2 to form a fused ring, and two adjacent carbon atoms of the A2 ring moiety of Chemical Formula B may occupy respective positions * of Structural Formula Q1 to form a fused ring;
• and
• wherein, Ar11, Ar12, and Ar13 may be the same or different, and are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted aryl of 6 to 50 carbon atoms, or a substituted or unsubstituted heteroaryl of 2 to 50 carbon atoms, with the proviso that when Ar12 is a hydrogen or deuterium atom, Ar13 is neither a hydrogen atom nor a deuterium atom,
• A is a monovalent substituent represented by the following Structural Formula A:
• wherein Ar10 is a substituted or unsubstituted heteroaryl of 2 to 50 carbon atoms,
• R11 to R14 may be the same or different, and are each independently any one selected from among a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano, a substituted or unsubstituted alkyl of 1 to 30 carbon atoms, a substituted or unsubstituted aryl of 6 to 50 carbon atoms, and a substituted or unsubstituted heteroaryl of 2 to 50 carbon atoms,
• wherein ‘substituted’ in an expression ‘substituted or unsubstituted’ used in Chemical Formulas A, B, and E means having at least one substituent selected from the group consisting of a deuterium atom, a cyano, a halogen, a nitro, an alkyl of 1 to 24 carbon atoms, a halogenated alkyl of 1 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, a heteroaryl of 2 to 24 carbon atoms or a heteroarylalkyl of 2 to 24 carbon atoms, an alkylsilyl of 1 to 24 carbon atoms, and an arylsilyl of 6 to 24 carbon atoms.