Quantum dot composition and method of manufacturing light-emitting device using the quantum dot composition
AssigneeSamsung Display Co., Ltd.
InventorsYunku Jung, Hyekyoung Choi, Sungwoon Kim, Jaekook Ha
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Abstract
A quantum dot composition may include: a first solvent; a second solvent different from the first solvent; first quantum dots including a hole-transporting ligand; and second quantum dots including an electron-transporting ligand, wherein the first solvent and the second solvent are miscible solvents having different boiling points from each other, a degree of dispersion of the first quantum dots is greater in the first solvent than in the second solvent, and a degree of dispersion of the second quantum dots is greater in the second solvent than in the first solvent.
Claims20
A quantum dot composition comprising:
- a first solvent;
- a second solvent different from the first solvent;
- first quantum dots comprising a hole-transporting ligand;
- and
- second quantum dots comprising an electron-transporting ligand,
- wherein the first solvent and the second solvent are miscible solvents having different boiling points from each other,
- a degree of dispersion of the first quantum dots is greater in the first solvent than in the second solvent, and
- a degree of dispersion of the second quantum dots is greater in the second solvent than in the first solvent.
A method of manufacturing a light-emitting device, the method comprising:
- providing a quantum dot composition on a first electrode,
- wherein the quantum dot composition comprises:
- a first solvent,
- a second solvent different from the first solvent,
- first quantum dots comprising a hole-transporting ligand, and
- second quantum dots comprising an electron-transporting ligand,
- wherein the first solvent and the second solvent are miscible solvents having different boiling points from each other, a degree of dispersion of the first quantum dots is greater in the first solvent than in the second solvent, and a degree of dispersion of the second quantum dots is greater in the second solvent than in the first solvent,
- forming a first emission layer by removing a solvent having a lower boiling point among the first solvent and the second solvent;
- forming a second emission layer by removing a solvent having a higher boiling point among the first solvent and the second solvent;
- and
- forming a second electrode on the second emission layer.
Dependencies are inferred from the claim text.