Electron Transport Layer Comprising a Matrix Compound Mixture for an Organic Light-Emitting Diode (OLED)

    公开(公告)号:US20210376259A1

    公开(公告)日:2021-12-02

    申请号:US17398835

    申请日:2021-08-10

    申请人: NOVALED GMBH

    IPC分类号: H01L51/00 H01L51/50 H01L51/56

    摘要: The present invention is directed to an organic light emitting diode (100) comprising: at least one anode electrode (120); at least one emission layer (150), wherein the emission layer comprises at least one emitter dopant that emits visible light at operation of the OLED (100); an electron transport layer stack (160) of at least two electron transport layers (161/162), and wherein a) the first electron transport layer (161) comprises i) a first organic aromatic matrix compound having a MW of about ≥400 to about ≤1000 and a dipole moment of about ≥0 Debye and about ≤2.5 Debye, wherein the first electron transport layer (161) is free of a polar organic aromatic phosphine compound; and b) the second electron transport layer (162) comprises two organic aromatic matrix compounds, which are a mixture of: i) the first organic aromatic matrix compound; and ii) a polar organic aromatic phosphine compound having a MW of about ≥400 to about ≤1000, and a dipole moment of about >2.5 Debye and about ≤10 Debye; and at least one cathode electrode layer (190); wherein the electron transport layer stack (160) is arranged between the emission layer (150) and the cathode electrode layer (190), the first electron transport layer (161) is in direct contact with the second electron transport layer (162), and wherein the first electron transport layer (161) is arranged nearer to the emission layer (150) and the second electron transport layer (162) is arranged nearer to the cathode electrode layer (190).

    Electron transport layer comprising a matrix compound mixture for an organic light-emitting diode (OLED)

    公开(公告)号:US11139446B2

    公开(公告)日:2021-10-05

    申请号:US15999648

    申请日:2017-02-16

    申请人: NOVALED GMBH

    IPC分类号: H01L51/50 H01L51/00 H01L51/56

    摘要: The present invention is directed to an organic light emitting diode (100) comprising: at least one anode electrode (120); at least one emission layer (150), wherein the emission layer comprises at least one emitter dopant that emits visible light at operation of the OLED (100); an electron transport layer stack (160) of at least two electron transport layers (161/162), and wherein a) the first electron transport layer (161) comprises i) a first organic aromatic matrix compound having a MW of about ≥400 to about ≤1000 and a dipole moment of about ≥0 Debye and about ≤2.5 Debye, wherein the first electron transport layer (161) is free of a polar organic aromatic phosphine compound; and b) the second electron transport layer (162) comprises two organic aromatic matrix compounds, which are a mixture of: i) the first organic aromatic matrix compound; and ii) a polar organic aromatic phosphine compound having a MW of about ≥400 to about ≤1000, and a dipole moment of about >2.5 Debye and about ≤10 Debye; and at least one cathode electrode layer (190); wherein the electron transport layer stack (160) is arranged between the emission layer (150) and the cathode electrode layer (190), the first electron transport layer (161) is in direct contact with the second electron transport layer (162), and wherein the first electron transport layer (161) is arranged nearer to the emission layer (150) and the second electron transport layer (162) is arranged nearer to the cathode electrode layer (190).

    Compound and Organic Semiconducting Layer, Organic Electronic Device, Display Device and Lighting Device Comprising the Same

    公开(公告)号:US20190322642A1

    公开(公告)日:2019-10-24

    申请号:US16387645

    申请日:2019-04-18

    申请人: Novaled GmbH

    摘要: The present invention relates to a compound of the Formula (I) wherein at least one of R1 to R10 and/or Ar4 is a group having the Formula (II) wherein the asterisk symbol “*” in Formula (II) represents the position of binding of the group having the Formula (II); L is selected from substituted or unsubstituted C6 to C18 arylene; Ar1 is selected from substituted or unsubstituted C3 to C24 heteroaryl, wherein the heteroaryl comprises at least two N-atoms; Ar2 and Ar3 are independently selected from substituted or unsubstituted C6 to C24 aryl and/or substituted or unsubstituted C4 to C24 heteroaryl, wherein Ar2 and Ar3 are selected differently from each other; Ar4 is selected from the group consisting of substituted or unsubstituted C1 to C16 alkyl, substituted or unsubstituted C6 to C24 aryl, substituted or unsubstituted C2 to C24 heteroaryl and a group having the general Formula (II); R1 to R10 are independently selected from the group consisting of H, D, F, C1 to C20 alkyl, C6 to C20 aryl, C2 to C20 heteroaryl and a group having the Formula (II); and R1 and R2; or R2 and R3 or R3; and R4; or R5 and R6 may independently from each other form a fused ring or system of fused rings; a semiconducting layer comprising the same, an organic electronic device comprising the same as well as a display or a lighting device comprising the organic electronic device.