Ink composition for light-emitting device and light-emitting device manufactured by using the same

A light-emitting device comprising:

• a first electrode;
• a second electrode facing the first electrode;
• and
• an interlayer between the first electrode and the second electrode, the interlayer comprising an emission layer,
• wherein a layer of the interlayer is prepared by using an ink composition for a light-emitting device, the ink composition comprising:
• a metal oxide;
• and a mixed solvent composition comprising a first solvent, a second solvent, and a third solvent,
• wherein the first solvent comprises one hydroxyl group and has a boiling point of 160° C. to 270° C.,
• the second solvent comprises one hydroxyl group and has a boiling point of 270° C. to 350° C., and
• the third solvent comprises two hydroxyl groups and has a boiling point of 270° C. to 350° C.