Organic electroluminescent device configured to emit light with high luminous efficiency

    公开(公告)号:US11489121B1

    公开(公告)日:2022-11-01

    申请号:US17461806

    申请日:2021-08-30

    IPC分类号: H01L51/00 H01L51/50

    摘要: An organic electroluminescence device includes an anode, a cathode, a first emitting layer and a second emitting layer that are interposed between the anode and the cathode and are in a direct contact with each other, and a first electron transporting layer between the cathode and the first emitting layer and the second emitting layer being in a direct contact with each other. The first emitting layer contains a first compound represented by a formula (1) as a first host material, the first compound having at least one group represented by a formula (11). The second emitting layer contains a second compound represented by a formula (2) as a second host material. The first electron transporting layer contains a third compound represented by a formula (3).

    Organic electroluminescent element and electronic device

    公开(公告)号:US11997920B2

    公开(公告)日:2024-05-28

    申请号:US17133297

    申请日:2020-12-23

    摘要: An organic electroluminescence device includes: an anode; a cathode; a first emitting unit including a first emitting layer and a first hole transporting zone; a first charge generating layer; and a second emitting unit including a second emitting layer, in which the first emitting unit, the first charge generating layer, and the second emitting unit are provided between the anode and the cathode in this order from the anode, the first hole transporting zone is provided between the anode and the first emitting layer, the first emitting layer contains a compound represented by a formula (1) below, and a thickness d1 of the first hole transporting zone is 60 nm or less. In the formula (1): at least one of R1 to R8 is -L13-Ar13; L11 to L13 are each independently a single bond, an arylene group or the like; and R1 to R8 not being -L13-Ar13 are each independently a hydrogen atom or the like.