Light-emitting device including organometallic compound, electronic apparatus including the light-emitting device, and the organometallic compound

A light-emitting device comprising:

• a first electrode;
• a second electrode facing the first electrode;
• an interlayer between the first electrode and the second electrode and including an emission layer;
• and
• an organometallic compound represented by Formula 1:
• wherein in Formula 1,
• M is platinum (Pt), palladium (Pd), copper (Cu), silver (Ag), gold (Au), rhodium (Rh), ruthenium (Ru), osmium (Os), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb), or thulium (Tm),
• X1 to X4 are each independently C or N,
• rings CY1, CY2, CY31 to CY33, and CY4 are each independently a C5-C30 carbocyclic group or a C1-C30 heterocyclic group,
• ring CY33 is a 5-membered or greater non-aromatic C4-C8 monocyclic group,
• rings CY32 and CY33 are condensed with each other to form a C5-C30 polycyclic group,
• L1 to L3 are each independently a single bond, *—C(R1a)(R1b)—*′, *—C(R1a)═*′, *═C(R1a)—*′, *—C(R1a) ═C(R1b)—*′, *—C(═O)—*′, *—C(═S)—*′, *—C≡C—*′, *—B(R1a)—*′, *—N(R1a)—*′, *—O—*′, *—P(R1a)—*′, *—Al(R1a)—*, *—Si(R1a)(R1b)—*′, *—P(═O)(R1a)—*′, *—S—*′, *—S(═O)—*′, *—S(═O)2—*′, or *—Ge(R1a)(R1b)—*′, and * and *′ each indicate a binding site to an adjacent atom,
• n1 to n3 are each independently an integer from 1 to 5,
• R1, R2, R31 to R33, R4, R1a, and Rib are each independently hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, a C1-C60 alkyl group unsubstituted or substituted with at least one R10a, a C2-C60 alkenyl group unsubstituted or substituted with at least one R10a, a C2-C60 alkynyl group unsubstituted or substituted with at least one R10a, a C1-C60 alkoxy group unsubstituted or substituted with at least one R10a, a C1-C60 alkylthio group unsubstituted or substituted with at least one R10a, a C3-C60 carbocyclic group unsubstituted or substituted with at least one R10a, a C1-C60 heterocyclic group unsubstituted or substituted with at least one R10a, a C6-C60 aryloxy group unsubstituted or substituted with at least one R10a, a C6-C60 arylthio group unsubstituted or substituted with at least one R10a, —C(Q1)(Q2)(Q3), —Si(Q1)(Q2)(Q3), —N(Q1)(Q2), —B(Q1)(Q2), —C(═O)(Q1), —S(═O)2(Q1), or —P(═O)(Q1)(Q2), provided that at least one R1 is a triphenylenyl group,
• a1, a2, a31 to a33, and a4 are each independently an integer from 1 to 20,
• R10a is:
• hydrogen, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, or a nitro group;
• a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, or a C1-C60 alkoxy group, each unsubstituted or substituted with deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, a C3-C60 carbocyclic group, a C1-C60 heterocyclic group, a C6-C60 aryloxy group, a C6-C60 arylthio group, —Si(Q11)(Q12)(Q13), —N(Q11)(Q12), —B(Q11)(Q12), —C(═O) (Q11), —S(═O)2 (Q11), —P (=O) (Q11)(Q12), or a combination thereof;
• a C3-C60 carbocyclic group, a C1-C60 heterocyclic group, a C6-C60 aryloxy group, or a C6-C60 arylthio group, each unsubstituted or substituted with deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group, a C3-C60 carbocyclic group, a C1-C60 heterocyclic group, a C6-C60 aryloxy group, a C6-C60 arylthio group, —Si(Q21)(Q22)(Q23), —N(Q21)(Q22), —B(Q21)(Q22), —C(═O) (Q21), —S(═O)2 (Q21), —P(═O)(Q21)(Q22), or a combination thereof;
• or
• —Si(Q31)(Q32)(Q33), —N(Q31)(Q32), —B(Q31)(Q32), —C(═O)(Q31), —S(═O)2 (Q31), or —P(═O)(Q31)(Q32),
• wherein Q1 to Q3, Q11 to Q13, Q21 to Q23, and Q31 to Q33 are each independently:
• hydrogen;
• deuterium;
• —F;
• —Cl;
• —Br;
• —I;
• a hydroxyl group;
• a cyano group;
• a nitro group;
• a C1-C60 alkyl group;
• a C2-C60 alkenyl group;
• a C2-C60 alkynyl group;
• a C1-C60 alkoxy group;
• or a C3-C60 carbocyclic group or a C1-C60 heterocyclic group, each unsubstituted or substituted with deuterium, —F, a cyano group, a C1-C60 alkyl group, a C1-C60 alkoxy group, a phenyl group, a biphenyl group, or a combination thereof.