Organic electroluminescence device and polycyclic compound for organic electroluminescence device

    公开(公告)号:US11569457B2

    公开(公告)日:2023-01-31

    申请号:US16547504

    申请日:2019-08-21

    Abstract: An organic electroluminescence device of an embodiment includes a first electrode, a second electrode and a plurality of organic layers disposed between the first electrode and the second electrode, in which at least one of the organic layers includes a polycyclic compound including a plurality of electron donors and an electron acceptor connecting the electron donors, at least one of the electron donors is a condensed ring including a borepine core, and the electron acceptor includes a phenyl group including, as a substituent, at least one cyano group or a heterocycle including at least one nitrogen atom, or a heteroaryl group including an oxygen atom or a sulfur atom for forming a ring, thereby achieving improved emission efficiency.

    LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING THE SAME

    公开(公告)号:US20220223789A1

    公开(公告)日:2022-07-14

    申请号:US17551077

    申请日:2021-12-14

    Abstract: A light-emitting device includes a first electrode, a second electrode facing the first electrode, and an interlayer including an emission layer between the first electrode and the second electrode and a hole transport region between the first electrode and the emission layer, wherein the emission layer may include a dopant, the hole transport region may include a first hole transport layer, a second hole transport layer between the first hole transport layer and the emission layer, and a third hole transport layer between the second hole transport layer and the emission layer, the first hole transport layer may include a first compound, the second hole transport layer may include a second compound, the third hole transport layer may include a third compound, and the first to third compounds may each independently be an amine-based compound, but may be different from each other.

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