Compound for quantum dot light emitting device, quantum dot light emitting device using the same, and electronic device thereof

A quantum dot light emitting device comprising a first electrode;

• a second electrode;
• a light emitting layer comprising quantum dots and a hole transport layer between the first electrode and the second electrode;
• an auxiliary light emitting layer between the hole transport layer and the light emitting layer, wherein the auxiliary light emitting layer comprises a compound represented by Formula 1:
• wherein in Formula 1 above,
• 1) Ar2 and Ar3 are each independently selected from the group consisting of a C6-60 aryl group;
• a fluorenyl group;
• a C2-60 heterocyclic group comprising at least one heteroatom among O, N, S, Si, and P;
• a fused ring group of a C3-60 aliphatic ring and a C1-60 aromatic ring;
• a C1-50 alkyl group;
• a C2-20 alkenyl group;
• a C2-20 alkynyl group;
• a C1-30 alkoxyl group;
• a C6-30 aryloxy group;
• and -L′-N(Ra)(Rb);
• 2) L1 to L3 are each independently selected from the group consisting of a single bond;
• a C1-60 arylene group;
• a fluorenylene group;
• a fused ring group of a C3-60 aliphatic ring and a C1-60 aromatic ring;
• and a C2-60 heterocyclic ring group;
• 3) R1 and R2 are each the same or different, and are each independently selected from the group consisting of hydrogen;
• deuterium, tritium;
• a halogen;
• a cyano group;
• a nitro group;
• a C6-60 aryl group;
• a fluorenyl group;
• a C2-60 heterocyclic group comprising at least one heteroatom among O, N, S, Si, and P;
• a fused ring group of a C3-60 aliphatic ring and a C6-60 aromatic ring;
• a C1-50 alkyl group;
• a C2-20 alkenyl group;
• a C2-20 alkynyl group;
• a C1-30 alkoxyl group;
• a C6-30 aryloxy group;
• and -L′-N(Ra)(Rb);
• 4) Y1 and Y2 are each independently absent, or a single bond, NR, O, S, or CR′R″, excluding the case where Y1 and Y2 are simultaneously a single bond or absent;
• 5) R, R′, and R″ are each independently selected from the group consisting of hydrogen;
• deuterium, tritium;
• a halogen;
• a cyano group;
• a nitro group;
• a C1-60 aryl group;
• a fluorenyl group;
• a C2-60 heterocyclic group comprising at least one heteroatom among O, N, S, Si, and P;
• a fused ring group of a C3-60 aliphatic ring and a C6-60 aromatic ring;
• a C1-50 alkyl group;
• a C2-20 alkenyl group;
• a C2-20 alkynyl group;
• a C1-30 alkoxyl group;
• a C6-30 aryloxy group;
• and -L′-N(Ra)(Rb);
• wherein R′ and R″ may combine with each other to form a spiro ring;
• 6) a is an integer of 0 to 4 and b is an integer of 0 to 3, with the proviso that when Y1 or Y2 is absent, a is an integer of 0 to 5, and b is an integer of 0 to 4;
• 7) where a or b is an integer of 2 or more, R1 and R2 are each plural being the same or different from each other, and a plurality of neighboring R1 or a plurality of neighboring R2 may combine with each other to form a ring;
• 8) L′ is selected from the group consisting of a single bond;
• a C6-60 arylene group;
• a fluorenylene group;
• a C2-60 heterocyclic group comprising at least one heteroatom among O, N, S, Si, and P;
• a C3-60 aliphatic ring;
• and a fused ring group of a C3-60 aliphatic ring and a C1-60 aromatic ring;
• 9) Ra and Rb are each independently selected from the group consisting of a C1-60 aryl group;
• a fluorenyl group;
• a C2-60 heterocyclic group comprising at least one heteroatom among O, N, S, Si, and P;
• a C3-60 aliphatic ring;
• and a fused ring group of a C3-60 aliphatic ring and a C6-60 aromatic ring;
• and
• 10) the rings formed by binding between the L′, L1 to L3, Ra, Rb, Ar2 and Ar3, R1 and R2, R, R′, R″, and neighboring groups thereof may each be further substituted with one or more substituents selected from the group consisting of deuterium;
• a halogen;
• a silane group substituted or unsubstituted with a C1-30 alkyl group or C6-30 aryl group;
• a siloxane group;
• a boron group;
• a germanium group;
• a cyano group;
• an amino group;
• a nitro group;
• a C1-30 alkylthio group;
• a C1-30 alkoxy group;
• a C6-30 arylalkoxy group;
• a C1-30 alkyl group;
• a C2-30 alkenyl group;
• a C2-30 alkynyl group;
• a C6-30 aryl group;
• a C6-30 aryl group substituted with deuterium;
• a fluorenyl group;
• a C2-30 heterocyclic group comprising at least one heteroatom among O, N, S, Si, and P;
• a C3-30 alicyclic group;
• a C7-30 arylalkyl group;
• a C6-30 arylalkenyl group;
• and a combination thereof;
• or may form a ring between the neighboring substituents.