Organic electroluminescence device and electronic apparatus including the same
AssigneeSamsung Display Co., Ltd.
InventorsHyewon Choi, Sungwook Kim, SeulOng Kim, Tsuyoshi Naijo, Hyein Jeong, JungMin Kang
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Abstract
Provided is an organic electroluminescence device including an emission layer between a first electrode and a second electrode, wherein the emission layer includes a first host represented by Formula 1, a second host which is different from the first host, a first dopant which is a thermally activated delayed fluorescence material having an electron donor and an electron acceptor, and a second dopant represented by Formula 2.
Claims4
An organic electroluminescence device, comprising:
- a first electrode;
- a second electrode on the first electrode;
- and
- an emission layer between the first electrode and the second electrode,
- wherein the emission layer comprises:
- a first host comprising at least one selected from compounds represented in the following Compound Group 1;
- a second host comprising at least one selected from compounds represented in the following Compound Group 2;
- a first dopant comprising at least one selected from compounds represented in the following Compound Group 3, which is a thermally activated delayed fluorescence material having an electron donor and an electron acceptor;
- and
- a second dopant comprising at least one selected from compounds represented in the following Compound Group 4:
An organic electroluminescence display device, comprising:
- a first electrode;
- a hole transport region on the first electrode;
- an emission layer on the first hole transport region;
- an electron transport region on the emission layer;
- and
- a second electrode on the electron transport region,
- wherein the emission layer comprises:
- a first host comprising at least one selected from compounds represented in the following Compound Group 1;
- a second host comprising at least one selected from compounds represented in the following Compound Group 2;
- a first dopant comprising at least one selected from compounds represented in the following Compound Group 3, which is a thermally activated delayed fluorescence material having an electron donor and an electron acceptor;
- and
- a second dopant comprising at least one selected from compounds represented in the following Compound Group 4:
An electronic apparatus comprising a plurality of pixels which are separately arranged from each other,
- wherein at least one of the pixels comprises:
- a first electrode;
- a hole transport region on the first electrode;
- an emission layer on the first hole transport region;
- an electron transport region on the emission layer;
- and
- a second electrode on the electron transport region, and
- the emission layer comprises:
- a first host comprising at least one selected from compounds represented in the following Compound Group 1;
- a second host comprising at least one selected from compounds represented in the following Compound Group 2;
- a first dopant comprising at least one selected from compounds represented in the following Compound Group 3, which is a thermally activated delayed fluorescence material having an electron donor and an electron acceptor;
- and
- a second dopant comprising at least one selected from compounds represented in the following Compound Group 4
- wherein the electron donor of the first dopant has a negative (−) Hammett substituent constant (σ), and the electron acceptor of the first dopant has a positive (+) Hammett substituent constant (σ):
Dependencies are inferred from the claim text.