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    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    2.
    发明申请
    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES 审中-公开

    公开(公告)号：US20190280212A1

    公开(公告)日：2019-09-12

    申请号：US16420555

    申请日：2019-05-23

    Applicant: Universal Display Corporation

    Inventor： Lichang ZENG ,  Chuanjun XIA ,  Scott JOSEPH ,  Walter YEAGER ,  Mingjuan SU ,  Ting-Chih WANG

    IPC: H01L51/00 ,  H01L51/50 ,  C09K11/06

    Abstract: A premixed co-evaporation source that is a mixture of a first compound and a second compound is disclosed. The co-evaporation source is for vacuum deposition process. The first compound has a different chemical structure than the second compound. The first compound and the second compound are both organic compounds. At least one of the first compound and the second compound contains at least one less abundant stable isotope atom. At least one of the first compound and the second compound is a fluorescent or delayed fluorescent emitter. The first compound has an evaporation temperature T1 of 100 to 400° C.; the second compound has an evaporation temperature T2 of 100 to 400° C.; the absolute value of T1−T2 is less than 20° C. The first compound has a concentration C1 in said mixture and a concentration C2 in a film formed by evaporating the mixture in a high vacuum deposition tool with a chamber base pressure between 1×10−6 Torr to 1×10−9 Torr, at a 2 Å/sec deposition rate on a surface positioned at a predefined distance away from the mixture being evaporated. The absolute value of (C1−C2)/C1 is less than 5%.

    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    6.
    发明申请
    ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES 有权

    公开(公告)号：US20220231230A1

    公开(公告)日：2022-07-21

    申请号：US17711352

    申请日：2022-04-01

    Applicant: Universal Display Corporation

    Inventor： Lichang ZENG ,  Chuanjun XIA ,  Scott JOSEPH ,  Walter YEAGER ,  Mingjuan SU ,  Ting-Chih WANG

    IPC: H01L51/00 ,  C09K11/06 ,  H01L51/50

    Abstract: A premixed co-evaporation source that is a mixture of a first compound and a second compound is disclosed. The co-evaporation source is for vacuum deposition process. The first compound has a different chemical structure than the second compound. The first compound and the second compound are both organic compounds. At least one of the first compound and the second compound contains at least one less abundant stable isotope atom. At least one of the first compound and the second compound is a fluorescent or delayed fluorescent emitter. The first compound has an evaporation temperature T1 of 100 to 400° C.; the second compound has an evaporation temperature T2 of 100 to 400° C.; the absolute value of T1−T2 is less than 20° C. The first compound has a concentration C1 in said mixture and a concentration C2 in a film formed by evaporating the mixture in a high vacuum deposition tool with a chamber base pressure between 1×10−6 Torr to 1×10−9 Torr, at a 2 Å/sec deposition rate on a surface positioned at a predefined distance away from the mixture being evaporated. The absolute value of (C1−C2)/C1 is less than 5%.

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