Disclosed is a light emitting element in which an intermediate layer comprises a first hole transport layer, a second hole transport layer, and a third hole transport layer, wherein the first hole transport layer comprises a first hole transport compound and a first p-dopant compound, the second hole transport layer comprises a second hole transport compound and a second p-dopant compound, the third hole transport layer comprises a third hole transport compound and does not comprise a p-dopant, and an absolute LUMO energy value of the second p-dopant compound is greater than that of an absolute LUMO energy value of the first p-dopant compound. Therefore, the present invention is capable of providing the light emitting element with an improved lifespan.

    중간층이 제1정공 수송층, 제2정공 수송층 및 제3정공 수송층을 포함하고, 상기 제1정공 수송층은 제1정공 수송성 화합물 및 제1p-도펀트 화합물을 포함하고, 상기 제2정공 수송층은 제2정공 수송성 화합물 및 제2p-도펀트 화합물을 포함하고, 상기 제3정공 수송층은 제3정공 수송성 화합물을 포함하고 p-도펀트를 포함하지 않으며, 상기 제2p-도펀트 화합물의 LUMO 에너지 절대값이 상기 제1p-도펀트 화합물의 LUMO 에너지 절대값보다 큰, 발광 소자가 개시된다.


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    Title :

    Light emitting device and electronic apparatus comprising same


    Additional title:

    발광 소자 및 이를 포함하는 전자 장치


    Contributors:

    Publication date :

    2023-06-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    H10K




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