Light emitting element and fused polycyclic compound for the same

A light emitting element, comprising:

• a first electrode;
• a second electrode on the first electrode;
• and
• an emission layer between the first electrode and the second electrode, wherein the emission layer comprises:
• a first compound represented by Formula 1;
• and
• at least one among a second compound represented by Formula HT-1, a third compound represented by Formula ET-1, and a fourth compound represented by Formula M-b:
• wherein in Formula 1,
• R1 is a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group of 1 to 60 carbon atoms, a substituted or unsubstituted aryl group of 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 60 ring-forming carbon atoms,
• m1 to m4 are each independently an integer of 0 to 4,
• m5 and m6 are each independently an integer of 0 to 5,
• Rb1 to Rb6 are each independently a hydrogen atom, a deuterium atom, a cyano group, a halogen atom, a substituted or unsubstituted alkyl group of 1 to 60 carbon atoms, a substituted or unsubstituted aryl group of 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 60 ring-forming carbon atoms,
• at least one among Ra1 to Ra4 is a substituted or unsubstituted aryl amine group, a substituted or unsubstituted aryl group of 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 60 ring-forming carbon atoms, and any remainder thereof are each independently a hydrogen atom or a deuterium atom, and
• at least one among Ra5 to Ra8 is a substituted or unsubstituted aryl amine group, a substituted or unsubstituted aryl group of 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 60 ring-forming carbon atoms, and any remainder thereof are each independently a hydrogen atom or a deuterium atom:
• wherein in Formula HT-1,
• L1 is a direct linkage, CR99R100, or SiR101R102,
• X91 is N or CR103, and
• R91 to R103 are each independently a hydrogen atom, a deuterium atom, a cyano group, a substituted or unsubstituted silyl group, a substituted or unsubstituted oxy group, a substituted or unsubstituted alkyl group of 1 to 60 carbon atoms, a substituted or unsubstituted aryl group of 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 60 ring-forming carbon atoms, and/or combined with an adjacent group to form a ring:
• wherein in Formula ET-1,
• at least one among Y1 to Y3 is N, and any remainder thereof are each independently CR81,
• R81 is a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 60 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 60 ring-forming carbon atoms,
• n11 to n13 are each independently an integer of 0 to 10,
• L1 to L3 are each independently a direct linkage, a substituted or unsubstituted arylene group of 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroarylene group of 2 to 30 ring-forming carbon atoms, and
• Ar1 to Ar3 are each independently a hydrogen atom, a deuterium atom, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 30 ring-forming carbon atoms:
• wherein in Formula M-b,
• Q1 to Q4 are each independently C or N,
• C1 to C4 are each independently a substituted or unsubstituted hydrocarbon ring of 5 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heterocycle of 2 to 30 ring-forming carbon atoms,
• e1 to e4 are each independently 0 or 1,
• L21 to L24 are each independently a direct linkage,
• a substituted or unsubstituted divalent alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted arylene group of 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroarylene group of 2 to 30 ring-forming carbon atoms,
• d1 to d4 are each independently an integer of 0 to 4, and
• R31 to R39 are each independently a hydrogen atom, a deuterium atom, a halogen atom, a cyano group, a substituted or unsubstituted amine group, a substituted or unsubstituted alkyl group of 1 to 20 carbon atoms, a substituted or unsubstituted aryl group of 6 to 30 ring-forming carbon atoms, or a substituted or unsubstituted heteroaryl group of 2 to 30 ring-forming carbon atoms, and/or combined with an adjacent group to form a ring.