PROBLEM TO BE SOLVED: To provide an organic electroluminescent element with high emission efficiency and a long life.SOLUTION: An organic electroluminescent element includes a hole transport region HTR. The hole transport region HTR includes a first hole transport layer HTL1 containing a hole transport material expressed by a particular chemical formula, and a second hole transport layer HTL2 containing a third hole transport material expressed by the chemical formula (3) or a fourth hole transport material expressed by the chemical formula (4).SELECTED DRAWING: Figure 1

    【課題】発光効率が高く、長寿命の有機電界発光素子を提供する。【解決手段】正孔輸送領域HTRが、特定の化学式で示される正孔輸送材料を含む第1正孔輸送層HTL1、及び下記の化学式(3)で示される第3正孔輸送材料又は下記の化学式(4)で示される第4正孔輸送材料を含む第2正孔輸送層HTL2を含む有機電界発光素子。【選択図】図1


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    Title :

    ORGANIC ELECTROLUMINESCENT ELEMENT


    Additional title:

    有機電界発光素子


    Contributors:
    FUJITA YOSHIMASA (author) / SATO JURI (author) / ITOI HIROAKI (author)

    Publication date :

    2017-10-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H10K



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