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Flexible top-emitting organic light emitting diodes with a functional dielectric reflector on a metal foil substrate

机译:柔性顶部发射有机发光二极管,金属箔基材上具有功能介电反射器

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摘要

For flexible organic light emitting diodes (OLEDs), roll-to-roll production enables low-cost fabrication and wide-ranging applications. Choosing an appropriate substrate material is one of the critical issues in the fabrication of flexible OLEDs. We demonstrated top-emitting OLEDs with a highly reflective distributed Bragg reflector (DBR) using a metal foil substrate. The DBR, made of seven pairs of SiO2/ZrO2, was formed by electron-beam evaporation on metal foil and showed high reflectivity of 90.5% at lambda = 500 nm. The DBR served not only as the optical reflector, but also the substrate insulating layer which enabled the electrical isolation and prevented crosstalk. The OLEDs showed an operation voltage of 6.5 V at a current density of J = 10 mA cm(-2) and maximum luminance of 17 400 cd m(-2) at J = 225 mA cm(-2). The electroluminescence property of the device could be maintained under the tensile bending condition.
机译:对于柔性有机发光二极管(OLED),卷到卷材生产可实现低成本的制造和宽范围的应用。 选择合适的衬底材料是柔性OLED制造中的关键问题之一。 我们使用金属箔基板与高反射分布的布拉格反射器(DBR)展示了顶部发射OLED。 由七对SiO 2 / ZrO 2制成的DBR通过金属箔上的电子束蒸发形成,并且在Lambda = 500nm时显示出90.5%的高反射率。 DBR不仅用作光学反射器,而且服务于基板绝缘层,其使电气隔离和防止串扰。 OLED显示在J = 10mA cm(-2)的电流密度下的6.5V的动作电压,并且在J = 225mA cm(-2)下的17 400cd m(-2)的最大亮度。 可以在拉伸弯曲条件下保持装置的电致发光性能。

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  • 来源
    《RSC Advances》 |2018年第46期|共5页
  • 作者单位

    Chungnam Natl Univ Dept Mat Sci &

    Engn Daejeon South Korea;

    Ajou Univ Dept Energy Syst Res Dept Mat Sci &

    Engn Suwon South Korea;

    Pohang Univ Sci &

    Technol Dept Mat Sci &

    Engn Pohang South Korea;

    Pohang Univ Sci &

    Technol Dept Mat Sci &

    Engn Pohang South Korea;

    Ajou Univ Dept Energy Syst Res Dept Mat Sci &

    Engn Suwon South Korea;

    Pohang Univ Sci &

    Technol Dept Mat Sci &

    Engn Pohang South Korea;

    Pohang Univ Sci &

    Technol Dept Mat Sci &

    Engn Pohang South Korea;

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  • 正文语种 eng
  • 中图分类 化学;
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