Provided is a light emitting device. A first light emitting layer comprises: a first hole transporting host (HTH1); a first electron transporting host (ETH1), and a first phosphorescent dopant (G1). A second light emitting layer comprises: a second hole transporting host (HTH2); a second electron transporting host (ETH2), and a second phosphorescent dopant (G2). An electron mobility of the first electron transporting host (ETH1) is faster than an electron mobility of the second electron transporting host (ETH2). A hole mobility of the second hole transporting host (HTH2) is faster than a hole mobility of the first hole transporting host (HTH1). The first hole transporting host (HTH1) and/or the second hole transporting host (HTH2) includes heavy hydrogen. The present invention provides the device with improved efficiency and a life cycle.

    제1발광층은 제1정공 수송성 호스트(HTH1), 제1전자 수송성 호스트(ETH1) 및 제1인광 도펀트(G1)를 포함하고, 제2발광층은 제2정공 수송성 호스트(HTH2), 제2전자 수송성 호스트(ETH2) 및 제2인광 도펀트(G2)를 포함하고, 제1전자 수송성 호스트(ETH1)의 전자 이동도가 제2전자 수송성 호스트(ETH2)의 전자 이동도보다 빠르고, 제2정공 수송성 호스트(HTH2)의 정공 이동도가 상기 제1정공 수송성 호스트(HTH1)의 정공 이동도보다 빠르며, 제1정공 수송성 호스트(HTH1) 및/또는 제2정공 수송성 호스트(HTH2)가 중수소를 포함하는, 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:
    KANG NAM SU (author) / LEE SONG EUN (author) / PARK HEUNG SU (author) / PARK HUI JU (author) / LEE HYUN SHIK (author) / HAN WON SUK (author)

    Publication date :

    2023-01-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    H10K




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