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首页> 外文期刊>Organic Electronics >Synthesis of phenylcarbazole-thiophene-based structural isomers as unipolar host materials for blue PHOLEDs and their device performance
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Synthesis of phenylcarbazole-thiophene-based structural isomers as unipolar host materials for blue PHOLEDs and their device performance

机译：苯基咔唑-噻吩基结构异构体的合成作为蓝色PHOLED的单极性主体材料及其器件性能

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摘要

New high triplet-energy host materials, which are symmetrically or asymmetrically designed by using phenylcarbazole and thiophene moieties, were synthesized by Suzuki-Miyaura cross-coupling reactions and their device performances of blue phosphorescent organic light-emitting diodes were also investigated. The synthesized compounds showed a high triplet energy (＞2.84 eV) and good thermal stability. Highly efficient blue PHOLEDs were obtained when employing the symmetric compounds having C2 symmetry as the host material and bis[2-(4,6-difluorophenyl)pyridinato-C~2,N](picolinato)iridium(Ⅲ) (FIrpic) as the guest material. Their maximum external quantum efficiency of the device reached as high as 18.9% with blue color coordinate of (0.15, 0.35).
机译：通过Suzuki-Miyaura交叉偶联反应合成了使用苯基咔唑和噻吩部分对称或不对称设计的新型高三重态能量主体材料，并研究了其蓝色磷光有机发光二极管的器件性能。合成的化合物显示出高的三重态能量（＞ 2.84 eV）和良好的热稳定性。以具有C2对称性的对称化合物为主体材料，以双[2-（4,6-二氟苯基）吡啶并-C〜2，N]（吡啶并吡啶）铱（Ⅲ）（FIrpic）为原料，制得了高效的蓝色PHOLED。来宾材料。在蓝色坐标为（0.15，0.35）的情况下，器件的最大外部量子效率高达18.9％。

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  • 来源
    《Organic Electronics》 |2014年第7期|1413-1421|共9页
  • 作者

    Seung-Won Choi; Jun Yeob Lee; Seok-Ho Hwang;

  • 作者单位

    Department of Polymer Science & Engineering, Dankook University, Yongin, Gyeonggi 448-701, Republic of Korea;

    Department of Polymer Science & Engineering, Dankook University, Yongin, Gyeonggi 448-701, Republic of Korea;

    Department of Polymer Science & Engineering, Dankook University, Yongin, Gyeonggi 448-701, Republic of Korea;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Phenylcarbazole; Thiophene; Phosphorescent OLEDs; Host material; Symmetry;

    机译：苯基咔唑;噻吩磷光OLED;主机材料;对称;

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