Organic electroluminescent compounds, layers and organic electroluminescent device using the same

A light emitting layer, comprising:

• an organic electroluminescent compound as a host material in the layer;
• and
• an iridium complex dopant,
• wherein the organic electroluminescent compound is represented by the following Formula 1;
• and the iridium complex dopant is represented by the following Formula 2:
• wherein:
• L1 represents a single bond;
• X1 represents N;
• Y represents —NR13—;
• Ar1 represents a single bond, a substituted or unsubstituted 5- to 30-membered heteroarylene group, a substituted or unsubstituted (C6-C30)arylene group;
• Ar2 represents hydrogen, deuterium, a substituted or unsubstituted (C1-C30)alkyl group, a substituted or unsubstituted (C6-C30)aryl group, or a substituted or unsubstituted 5- to 30-membered heteroaryl group;
• R1 to R5 each independently represent hydrogen, deuterium, a halogen, as substituted or unsubstituted (C1-C30)alkyl group, a substituted or unsubstituted (C6-C30)aryl group, a substituted or unsubstituted 5- to 30-membered heteroaryl group, a substituted or unsubstituted (C3-C30)cycloalkyl group, a substituted or unsubstituted 5- to 7-membered heterocycloalkyl group, a substituted or unsubstituted (C6-C30)aryl(C1-C30)alkyl group, a substituted or unsubstituted (C6-C30)aryl group fused with at least one (C3-C30)cycloalkyl group, a 5- or 7-membered heterocycloalkyl group fused with at least one substituted or unsubstituted (C6-C30)aromatic ring, (C3-C30)cycloalkyl group fused with at least one substituted or unsubstituted (C6-C30)aromatic ring, —NR14R15, —SiR16R17R18, —SR19, —OR20, a substituted or unsubstituted (C2-C30)alkenyl group, a substituted or unsubstituted (C2-C30)alkynyl group, a cyano group, a nitro group, or a hydroxyl group;
• or are linked to an adjacent substituent via a substituted or unsubstituted (C3-C30)alkylene group or a substituted or unsubstituted (C3-C30)alkenylene group to form a mono- or polycyclic alicyclic ring or a mono- or polycyclic aromatic ring whose carbon atom(s) may be substituted by at least one hetero atom selected from nitrogen, oxygen and sulfur;
• R13 to R20 have the same meaning as one of R1 to R5,
• a, b and e each independently represent an integer of 1 to 4;
• where a, b or e is an integer of 2 or more, each of R1, each of R2 or each of R5 is the same or different;
• c and d each independently represent an integer of 1 to 3;
• where c or d is an integer of 2 or more, each of R3 or each of R4 is the same or different;
• and
• the heterocycloalkyl group and the heteroaryl(ene) group contain at least one hetero atom selected from B, N, O, S, P(═O), Si and P, and
• M1L101L102L103 [Formula 2]
• wherein
• M1 is Ir;
• L101 and L102 are the same and represent
• and
• L103 represents
• wherein R201 to R203 each independently represent hydrogen, deuterium, or a (C1-C30)alkyl group;
• R206 to R208, R210, and R212 to R215 each independently represent hydrogen, deuterium, a substituted or unsubstituted (C1-C30)alkyl group, or a substituted or unsubstituted (C6-C30)aryl group;
• and
• R209 and R211 each independently represent a substituted or unsubstituted (C1-C30)alkyl group.