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首页> 外文期刊>Advanced Functional Materials >Hyperbranched Polymers with High Transparency and Inherent High Refractive Index for Application in Organic Light-Emitting Diodes
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Hyperbranched Polymers with High Transparency and Inherent High Refractive Index for Application in Organic Light-Emitting Diodes

机译：具有高透明度和固有高折射率的超支化聚合物，用于有机发光二极管

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摘要

Hyperbranched polyvinylsulfides have been prepared through a facile, metal-free, radical induced "A(2) + B-3" thiol-yne polymerization of 1,3,5-tris(naphthalylethynyl) benzene and 1,4-dithiolbenzene with three different input ratios. The resulting polymers exhibit excellent optical properties like high transparency and very high refractive index (RI) of up to 1.7839, combined with high thermal stability (T-d5% up to 420 degrees C) and excellent solution processability. These properties make them ideal candidates as high RI polymeric materials (HRIP) in connection with light out-coupling schemes for organic light-emitting diodes (OLEDs). A series of hyperbranched HRIPs with varying monomer compositions have been compared in their optical properties. Finally, phosphorescent monochrome OLEDs are fabricated on top of HRIP layers to test the compatibility of HRIPs with state-of-the-art OLEDs. The results show that the HRIPs do not deteriorate the performance of the OLEDs while maintaining external quantum efficiencies of over 20% for phosphorescent red OLEDs. These results open a pathway toward alternative, low-cost, and scalable out-coupling concepts through refractive index matching of the OLED materials and the HRIPs presented.
机译：超支化聚乙烯硫醚是通过1,3,5-三（萘乙炔基）苯和1,4-二硫醇苯与三种不同的游离金属进行的自由基诱导的“ A（2）+ B-3”硫醇-炔聚合反应制备的输入比率。所得的聚合物表现出优异的光学性能，例如高透明性和高达1.7839的非常高的折射率（RI），以及高的热稳定性（高达420摄氏度的T-d5％）和出色的溶液加工性。这些特性使它们成为与有机发光二极管（OLED）的光输出耦合方案结合使用的高RI聚合材料（HRIP）的理想选择。已经比较了具有不同单体组成的一系列超支化HRIP的光学性能。最后，在HRIP层之上制造磷光单色OLED，以测试HRIP与最新OLED的兼容性。结果表明，HRIP不会降低OLED的性能，同时对于磷光红色OLED保持超过20％的外部量子效率。这些结果通过OLED材料和所提出的HRIP的折射率匹配，为通向替代，低成本和可扩展的外耦合概念开辟了道路。

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  • 来源
    《Advanced Functional Materials》 |2016年第15期|2545-2553|共9页
  • 作者

    Wei Qiang; Poetzsch Robert; Liu Xiaoling; Komber Hartmut; Kiriy Anton; Voit Brigitte; Will Paul-Anton; Lenk Simone; Reineke Sebastian;

  • 作者单位

    Leibniz Inst Polymerforsch Dresden eV, Hohe Str 6, D-01069 Dresden, Germany|Tech Univ Dresden, Chair Organ Chem Polymers, D-01062 Dresden, Germany|Tech Univ Dresden, Ctr Adv Elect Dresden Cfaed, D-01062 Dresden, Germany;

    Leibniz Inst Polymerforsch Dresden eV, Hohe Str 6, D-01069 Dresden, Germany;

    Leibniz Inst Polymerforsch Dresden eV, Hohe Str 6, D-01069 Dresden, Germany|Tech Univ Dresden, Chair Organ Chem Polymers, D-01062 Dresden, Germany;

    Leibniz Inst Polymerforsch Dresden eV, Hohe Str 6, D-01069 Dresden, Germany;

    Leibniz Inst Polymerforsch Dresden eV, Hohe Str 6, D-01069 Dresden, Germany;

    Leibniz Inst Polymerforsch Dresden eV, Hohe Str 6, D-01069 Dresden, Germany|Tech Univ Dresden, Chair Organ Chem Polymers, D-01062 Dresden, Germany|Tech Univ Dresden, Ctr Adv Elect Dresden Cfaed, D-01062 Dresden, Germany;

    Tech Univ Dresden, Inst Angew Photophys IAPP, George Bahr Str 1, D-01062 Dresden, Germany;

    Tech Univ Dresden, Inst Angew Photophys IAPP, George Bahr Str 1, D-01062 Dresden, Germany;

    Tech Univ Dresden, Ctr Adv Elect Dresden Cfaed, D-01062 Dresden, Germany|Tech Univ Dresden, Inst Angew Photophys IAPP, George Bahr Str 1, D-01062 Dresden, Germany;

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