Organic light-emitting device and method of producing the same
AssigneeSamsung Display Co., Ltd.
InventorEung-Do Kim
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Abstract
An organic light-emitting device and a method of producing the same, the device including a substrate; a first electrode layer on the substrate; an emission layer on the first electrode layer; an electron transport layer on the emission layer, the electron transport layer including first electron transport layers and a second electron transport layer between the first electron transport layers and the second electron transport layer including a lanthanide metal; and a second electrode layer on the electron transport layer.
Claims17
An organic light-emitting device, comprising:
- a substrate;
- a first electrode layer on the substrate;
- an emission layer on the first electrode layer;
- an electron transport layer on the emission layer, the electron transport layer including first electron transport layers and at least one second electron transport layer, wherein the at least one second electron transport layer:
- is between the first electron transport layers,
- has a thickness of about 5 Å to about 15 Å, and
- includes a lanthanide metal;
- a second electrode layer on the electron transport layer;
- and
- an electron injection layer between the electron transport layer and the second electrode layer, wherein the electron injection layer includes a carboxylate compound of an alkali metal, an acetate compound of an alkali metal, an azide compound of an alkali metal, or a carboxide of an alkali metal.
A method of producing an organic light-emitting device, the method comprising:
- providing a substrate;
- providing a first electrode layer on the substrate;
- forming a hole injection layer or a hole transport layer on the first electrode layer;
- forming an emission layer on the hole injection layer or the hole transport layer;
- forming an electron transport layer on the emission layer such that the electron transport layer includes first electron transport layers and at least one second electron transport layer, wherein the at least one second electron transport layer:
- is between the first electron transport layers,
- has a thickness of about 5 Å to about 15 Å, and
- includes a lanthanide metal;
- forming an electron injection layer on the electron transport layer;
- and
- forming a second electrode layer on the electron injection layer, wherein the electron injection layer includes a carboxylate compound of an alkali metal, an acetate compound of an alkali metal, an azide compound of an alkali metal, or a carboxide of an alkali metal.
Dependencies are inferred from the claim text.