Organic electroluminescent materials and devices

    公开(公告)号:US11557733B2

    公开(公告)日:2023-01-17

    申请号:US16287190

    申请日:2019-02-27

    Inventor: Jerald Feldman

    Abstract: A compound of Formula I wherein Z1, Z2, Z3, and Z4 are independently selected from C or N; wherein one of Z1 or Z3 is N and the other is C, and one of Z2 or Z4 is N and the other is C; and if Z3 and Z4 are N, then one of RB and one of RC is selected from the group consisting of aryl, substituted aryl, heteroaryl, and substituted heteroaryl; or if Z1 and Z2 are N and, then one of RA, one of RB or one of RC is selected from the group consisting of an optionally substituted aryl, and an optionally substituted heteroaryl. An organic light emitting diode/device (OLED) that includes an anode, a cathode, and an organic layer disposed between the anode and the cathode. The organic layer includes a compound of Formula I above. The OLED can be incorporated into a consumer product, an electronic component module, and/or a lighting panel.

    Organic electroluminescent materials and devices

    公开(公告)号:US11228010B2

    公开(公告)日:2022-01-18

    申请号:US16037167

    申请日:2018-07-17

    Abstract: 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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