발광층이 3개 이상의 호스트를 포함하고, 전자 수송 영역이 버퍼층을 포함하며, 상기 3개 이상의 호스트는 정공 수송성 호스트(HT), 제1 전자 수송성 호스트(ET1) 및 제2 전자 수송성 호스트(ET2)를 포함하며, 상기 버퍼층은 제3 전자 수송성 호스트(ET2')를 포함하며, 상기 제2 전자 수송성 호스트(ET2)의 LUMO 에너지가 상기 제3 전자 수송성 호스트(ET2')의 LUMO 에너지와 같은, 발광 소자 등이 개시된다.

    A light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an interlayer disposed between the first electrode and the second electrode and having an emission layer, wherein the interlayer includes: i) a hole transport region disposed between the first electrode and the emission layer; and ii) an electron transport region disposed between the emission layer and the second electrode; wherein: the emission layer includes three or more hosts; the electron transport region includes a buffer layer; the three or more hosts include a hole transport host, a first electron transport host, and a second electron transport host; the buffer layer includes a third electron transport host; and a lowest unoccupied molecular orbital energy level of the second electron transport host is substantially equal to a lowest unoccupied molecular orbital energy level of the third electron transport host.


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    Titel :

    Light emitting device and electronic apparatus comprising same


    Weitere Titelangaben:

    발광 소자 및 이를 포함하는 전자 장치


    Erscheinungsdatum :

    27.03.2025


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Koreanisch


    Klassifikation :

    IPC:    H10K



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