Light-emitting device and electronic apparatus including the same

A light-emitting device comprising:

• a plurality of first electrodes arranged for each of a first subpixel, a second subpixel, and a third subpixel;
• a second electrode facing the plurality of first electrodes;
• m emitting units between the second electrode and the plurality of first electrodes;
• and
• m−1 charge generation layers, each arranged between two neighboring emitting units among the m emitting units and comprising an n-type charge generation layer and a p-type charge generation layer, wherein
• m is an integer of 2 or more,
• each of the m emitting units comprises an emission layer and an electron transport region that are sequentially arranged,
• at least one of the m emission layers comprises a first emission layer arranged on the first subpixel and emitting first-color light, a second emission layer arranged on the second subpixel and emitting second-color light, and a third emission layer arranged on the third subpixel and emitting third-color light,
• the first-color light is red light, the second-color light is green light, and the third-color light is blue light,
• at least one of the m electron transport regions comprises an electron transport layer and an electron injection layer that are sequentially arranged,
• the electron transport layer comprises a co-deposited layer of a first material and a second material,
• the first material is a compound represented by Formula 1 or Formula 2,
• the second material comprises a first metal, a halide of the first metal, a complex comprising the first metal, or a combination thereof,
• the electron injection layer comprises a third material and a fourth material,
• the third material comprises a second metal, a halide of the second metal, a complex comprising the second metal, or a combination thereof,
• the fourth material comprises a third metal, a halide of the third metal, a complex comprising the third metal, or a combination thereof,
• the first metal, the second metal, and the third metal are each independently an alkali metal, an alkaline earth metal, a rare earth metal, a third-row transition metal of the periodic table, or a combination thereof,
• the second metal and the third metal are different from each other, and
• an amount of the third material is in a range of about 50 parts by weight to about 99 parts by weight, based on a total of 100 parts by weight of the electron injection layer:
• wherein in Formula 1,
• X11 is N or C(Z11),
• X12 is N or C(Z12),
• A11 and A12 are each independently a C1-C60 heterocyclic group including at least one N, and
• d11 and d12 are each independently an integer from 1 to 10,
• wherein in Formula 2,
• Y21 is O, S, or Se,
• A21 is a C5-C60 carbocyclic group unsubstituted or substituted with at least one R10a or a C1-C60 heterocyclic group unsubstituted or substituted with at least one R10a, and
• n21 is an integer from 1 to 3,
• wherein in Formulae 1 and 2,
• L11, L12, and L21 to L23 are each independently a single bond, a C5-C60 carbocyclic group unsubstituted or substituted with at least one R10a, or a C1-C60 heterocyclic group unsubstituted or substituted with at least one R10a,
• a11, a12, and a21 to a23 are each independently an integer from 1 to 5,
• R11, R12, R22, R23, Z11, and Z12 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 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, —Si(Q1)(Q2)(Q3), —N(Q1)(Q2), —B(Q1)(Q2), —C(═O)(Q1), —S(═O)2(Q1), or —P(═O)(Q1)(Q2),
• b11, b12, b22, and b23 are each independently an integer from 1 to 10,
• R22 and R23 are optionally bonded to each other to form a C5-C60 carbocyclic group unsubstituted or substituted with at least one R10a or a C2-C30 heterocyclic group unsubstituted or substituted with at least one R10a,
• Z11 and Z12 are optionally bonded to each other to form a C5-C60 carbocyclic group unsubstituted or substituted with at least one R10a or a C2-C30 heterocyclic group unsubstituted or substituted with at least one R10a,
• R10a is:
• deuterium, —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-Coo 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), and
• 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.