Disclosed is an organic light emitting element including: a first electrode; a second electrode opposed to the first electrode; and an organic layer placed between the first and second electrodes, and including a light emitting layer. The light emitting layer includes a host and a dopant. The host includes first and second compounds. The first and second compounds and the dopant are different from each other. The two types of compounds, having different HOMO and LUMO energy levels, of the host included in the light emitting layer form an exciplex. A difference (△Eexciplex) between HOMO and LUMO energy levels of the exciplex is greater than a difference (△Edopant) between HOMO and LUMO energy levels of the dopant. Therefore, the present invention is capable of achieving a low driving voltage, high efficiency and a long lifespan.

    제1전극; 상기 제1전극과 대향된 제2전극; 및 상기 제1전극 및 상기 제2전극 사이에 배치되고, 발광층을 포함한 유기층;을 포함하고, 상기 발광층은 호스트 및 도펀트를 포함하고, 상기 호스트는 제1화합물 및 제2화합물을 포함하고, 상기 제1화합물, 상기 제2화합물 및 상기 도펀트는 각각 서로 상이하고, 상기 발광층에 포함된 호스트 중 HOMO 및 LUMO 에너지 레벨이 각각 서로 다른 2종의 화합물이 엑시플렉스를 형성하고, 상기 엑시플렉스의 HOMO 에너지 레벨과 LUMO 에너지 레벨의 차이(△Eexciplex)는 상기 도펀트의 HOMO 에너지 레벨과 LUMO 에너지 레벨의 차이(△Edopant) 보다 큰, 유기 발광 소자가 개시된다.


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    Titel :

    Organic light emitting device and apparatus including the same


    Weitere Titelangaben:

    유기 발광 소자 및 이를 포함한 장치


    Beteiligte:
    IM YEONG JI (Autor:in) / LIM JIN O (Autor:in) / KIM BEOM JIN (Autor:in) / YANG SEUNG GAK (Autor:in)

    Erscheinungsdatum :

    15.10.2021


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Koreanisch


    Klassifikation :

    IPC:    H10K



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