Organic electroluminescent device, method for manufacturing the organic electroluminescent device, and electronic apparatus
An organic electroluminescent device includes a pair of electrodes, and a first organic layer and a second organic layer in contact with each other formed between the electrodes by a wet process. The first organic layer contains a crosslinkable organic material and includes a crosslinked layer formed by crosslinking the crosslinkable organic material at least at the interface with the second organic layer.
1. An organic electroluminescent device comprising:
a light-emitting layer formed between a pair of electrodes by a wet process; and
an electron transport layer,
the light-emitting layer including:
an organic material and a light-emitting material having a crosslinking property; and
a first crosslinked layer formed by crosslinking the organic material having the crosslinking property, and arranged at least at an interface of the electron transport layer and the light-emitting layer,
the electron transport layer including:
an electron transport layer-forming material that has a crosslinking property;
a second crosslinked layer formed by crosslinking the electron transport layer-forming material; and
an uncrosslinked layer in which the electron transport layer-forming material is not crosslinked,
the electron transport layer being formed on the light-emitting layer,
the second crosslinked layer being arranged at the interface of the electron transport layer and the light-emitting layer,
the uncrosslinked layer being arranged at an interface of the electron transport layer and one of the pair of electrodes,
the organic material being of a material expressed as
the light-emitting layer material being of a material expressed as
the electron transport layer-forming material comprising the following material
wherein n is an integer that is equal to, or greater than 1.
2. The organic electroluminescent device according to claim 1 , an electrochemical oxidation potential of the light-emitting material forming the light-emitting layer being smaller than an electrochemical oxidation potential of the electron transport layer-forming material forming the electron transport layer.
3. The organic electroluminescent device according to claim 1 ,
the first crosslinked layer formed by crosslinking the light-emitting material.
4. The organic electroluminescent device according to claim 1 , the light-emitting material being included within the first crosslinked layer.
5. An electronic apparatus comprising the organic electroluminescent device as set forth in claim 1 .
6. A method for manufacturing an organic electroluminescent device including a light-emitting layer formed between a pair of electrodes by a wet process, and an electron transport layer, the method comprising:
forming the light-emitting layer including an organic material and a light-emitting material having a crosslinking property;
forming a first crosslinked layer by crosslinking, in the light-emitting layer, the organic material having the crosslinking property;
arranging the first crosslinked layer at least at an interface of the electron transport layer and the light-emitting layer;
forming the electron transport layer including an electron transport layer-forming material that has a crosslinking property;
forming a second crosslinked layer by crosslinking the electron transport layer-forming material; and
forming an uncrosslinked layer, arranged within the electron transport layer, in which the electron transport layer-forming material is not crosslinked,
the electron transport layer being formed on the light-emitting layer,
the second crosslinked layer being arranged at the interface of the electron transport layer and the light-emitting layer,
the uncrosslinked layer being arranged at an interface of the electron transport layer and one of the pair of electrodes,
the organic material being of a material expressed as
the light-emitting material being of a material expressed as
and
the electron transport layer-forming material comprising the following material
wherein n is an integer that is equal to, or greater than 1.
7. The method according to claim 6 , an electrochemical oxidation potential of the light-emitting material forming the light-emitting layer being smaller than an electrochemical oxidation potential of the electron transport layer-forming material forming the electron transport layer.
8. The method according to claim 6 , the first crosslinked layer being formed by crosslinking the light-emitting material.
9. The method according to claim 6 , the light-emitting material being included within the first crosslinked layer.
10. The method according to claim 6 , the organic material being a light-emitting material having a crosslinking property.
11. An electronic apparatus comprising the organic electroluminescent device manufactured by the method as set forth in claim 6 .