Ink composition for forming an electron transport layer of a light-emitting device and a light-emitting device manufactured using the ink composition
AssigneeSamsung Display Co., Ltd.
InventorsTaeheon KANG, Sehun Kim, Heunggyu Kim, Hyeran Mun, Juyon Lee, Jaekook Ha
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Abstract
An ink composition for forming an electron transport layer of a light-emitting device of a display device includes: an electron-transporting compound including a phosphine oxide moiety; and a solvent represented by Formula 1, (P═O)(OR1)(OR2)(OR3) Formula 1 wherein, in Formula 1, R1 to R3 each, independently from one another, are hydrogen, deuterium, or a C1-C30 alkyl group, and at least one of R1 to R3 is a C1-C30 alkyl group.
Claims20
An ink composition for forming an electron transport layer of a light-emitting device of a display device, the ink composition comprising:
- an electron-transporting compound comprising a phosphine oxide moiety;
- and
- a solvent represented by Formula 1,
- (P═O)(OR1)(OR2)(OR3) Formula 1
- wherein, in Formula 1, R1 to R3 each, independently from one another, are hydrogen, deuterium, or a C1-C30 alkyl group, and
- at least one of R1 to R3 is a C1-C30 alkyl group.
A light-emitting device of a display device, the light emitting device comprising:
- a first electrode;
- a second electrode facing the first electrode;
- and
- an interlayer disposed between the first electrode and the second electrode and including an emission layer and an electron transport layer,
- wherein the electron transport layer is made by a soluble process by using an ink composition for forming an electron transport layer of a light-emitting device, the ink composition comprising:
- an electron-transporting compound comprising a phosphine oxide moiety;
- and
- a solvent represented by Formula 1,
- (P═O)(OR1)(OR2)(OR3) Formula 1
- wherein, in Formula 1, R1 to R3 each, independently from one another, are hydrogen, deuterium, or a C1-C30 alkyl group, and
- at least one of R1 to R3 is a C1-C30 alkyl group.
Dependencies are inferred from the claim text.