ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

    公开(公告)号:US20230147066A1

    公开(公告)日:2023-05-11

    申请号:US17959321

    申请日:2022-10-04

    IPC分类号: C07F15/00 H01L51/00

    摘要: A compound having a formula of M(LA)p(LB)q(LC)r, where LA has a structure of Formula I,




    LB is a bidentate ligand; and LC has a structure of Formula II,




    is provided. In Formula I and Formula II, the compound can be homoleptic or heteroleptic and can include up to three different ligands; K3 and K4 are each independently a direct bond, O, or S; each of moiety A and moiety B represents a monocyclic ring or a polycyclic, fused-ring structure; each of Z1 and Z2 is C or N; and at least one of RA, RB, RC1, RC2, or RC3 comprises a structure of Formula III,




    In Formula III, L is bivalent organic linker, and Z is Si or Ge. Each RA, RB, RC1, RC2, and RC3 is independently hydrogen or a General Substituent, and each of R1, R2, and R3 is a General Substituent. Formulations, OLEDs, and consumer products including such compounds are also provided.

    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

    公开(公告)号:US20220399510A1

    公开(公告)日:2022-12-15

    申请号:US17718690

    申请日:2022-04-12

    IPC分类号: H01L51/00 C07F15/00 C09K11/06

    摘要: A compound including a first ligand LA of Formula I, is described. In Formula I, each of X1 to X9 is independently C or N; one of Z1 and Z2 is C and the other is N; each of K1 and K2 is independently a direct bond, O, or S; at least one of K1 and K2 is a direct bond; at least one RB is not hydrogen; R3 is selected from alkyl, heteroalkyl, cycloalkyl, and heterocycloalkyl; LA is coordinated to a metal M; at least one of the following is true: (i) at least one RB comprises a 5- or 6-membered, (ii) two adjacent RB are joined to form a fused 5- or 6-membered ring, or (iii) RB comprises a carbocyclic or heterocyclic ring substituted with at least one electron withdrawing group. Devices, consumer products, and formulations including the compound are also described.