발광층이 제1 호스트 및 이미터를 갖는 OLED로서, 이미터는 인광성 금속 착물 또는 지연 형광 이미터이고, EH1T, 즉 제1 호스트의 T1 삼중항 에너지는 EET, 즉 이미터의 T1 삼중항 에너지보다 높고, EET는 적어도 2.50 eV이고, 제1 호스트의 LUMO 에너지는 이미터의 HOMO 에너지보다 높고, 이미터의 HOMO 에너지와 제1 호스트의 LUMO 에너지 간 차이의 절대값은 ΔE1이고, a ≤ ΔE1 - EET ≤ b이고; a ≥ 0.05 eV이고, b ≤ 0.60 eV인 OLED가 개시된다.

    An OLED is disclosed whose emissive layer has a first host and an emitter, where the emitter is a phosphorescent metal complex or a delayed fluorescent emitter, where EH1T, the T1 triplet energy of the first host, is higher than EET, the T1 triplet energy of the emitter, where EET is at least 2.50 eV, where the LUMO energy of the first host is higher than the HOMO energy of the emitter, where the absolute value of the difference between the HOMO energy of the emitter and the LUMO energy of the first host is ΔE1, where a ≤ ΔE1 - EET ≤ b; and where a ≥ 0.05 eV, and b ≤ 0.60 eV.


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    Title :

    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES


    Additional title:

    유기 전계발광 물질 및 디바이스


    Publication date :

    2023-05-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    H10K



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