ORGANIC LIGHT-EMITTING DEVICE
    53.
    发明申请
    ORGANIC LIGHT-EMITTING DEVICE 审中-公开
    有机发光装置

    公开(公告)号:US20170012211A1

    公开(公告)日:2017-01-12

    申请号:US15053685

    申请日:2016-02-25

    Abstract: An organic light-emitting device includes a first electrode, a second electrode, and an emission layer between the first electrode and the second electrode, in which the emission layer may include a fluorescent host and a fluorescent dopant. The device includes a charge balance layer (CBL) adjacent to the emission layer and between the emission layer and the second electrode. When the LUMO of the charge balance layer (ECL) is at least 0.2 eV higher than the LUMO of the electron transport layer (EEL), and the HOMO of the charge balance layer (ECH) is at least 0.2 eV lower than the HOMO of the fluorescent dopant (EdH), the rate of electron injection into the emission layer can be controlled, and direct electron injection into the host and dopant at the same or substantially the same time can be achieved, thereby improving the device efficiency.

    Abstract translation: 有机发光器件包括在第一电极和第二电极之间的第一电极,第二电极和发射层,其中发射层可以包括荧光主体和荧光掺杂剂。 该装置包括与发射层相邻并且在发射层和第二电极之间的电荷平衡层(CBL)。 当电荷平衡层(ECL)的LUMO比电子传输层(EEL)的LUMO高至少0.2eV时,电荷平衡层(ECH)的HOMO比HOMO低至少0.2eV 可以控制荧光掺杂剂(EdH),注入发射层的电子速率,并且可以在相同或基本相同的时间内直接注入主体和掺杂剂,从而提高器件的效率。

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