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首页> 外文期刊>Journal of Materials Chemistry, C. materials for optical and electronic devices >Efficient ITO-free organic light-emitting devices with dual-functional PSS-rich PEDOT: PSS electrode by enhancing carrier balance
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Efficient ITO-free organic light-emitting devices with dual-functional PSS-rich PEDOT: PSS electrode by enhancing carrier balance

机译：高效的ITO的有机发光器件，具有双功能性PSS的PETOT：PSS电极通过增强载波平衡

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摘要

Organic semiconductors typically show highly asymmetric hole and electron mobilities, with the hole mobility exceeding the electron mobility by orders of magnitude in most cases. Therefore, an extra hole buffer layer is always needed to alleviate the hole injection, complicating the fabrication of organic light-emitting devices (OLEDs). Here, a bifunctional electrode serving as a transparent electrode and hole buffer layer simultaneously is proposed, using highly conductive poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) films without removing any PSS chains. The existence of a large number of PSS chains makes it possible for the PEDOT: PSS electrode to possess hole buffer functionality. A much better carrier balance can be achieved in the OLEDs based on the dual-functional electrode. Although it is still a challenge to achieve high performance OLEDs based on PEDOT: PSS transparent electrodes, these types of OLEDs, including green and white devices, show excellent luminous efficiency and efficiency roll-off, much better than ITO-based devices. This work provides a route for high performance simple ITO-free OLEDs.
机译：有机半导体通常显示出高度不对称的孔和电子迁移率，并且在大多数情况下，空穴迁移率超过了电阶数值的阶数。因此，始终需要额外的孔缓冲层来缓解空穴注入，使有机发光装置的制造复杂化（OLED）。这里，提出了一种双官能电极，用作透明电极和空穴缓冲层，同时使用高导电聚（3,4-亚乙基氧基噻吩）聚苯乙烯磺酸酯（PEDOT：PSS）膜而不除去任何PSS链。大量PSS链的存在使得PEDOT：PSS电极具有孔缓冲功能。基于双功能电极，OLED可以在OLED中实现更好的载波平衡。尽管基于PEDOT实现高性能OLED仍然是一项挑战：PSS透明电极，这些类型的OLED，包括绿色和白色器件，显示出优异的发光效率和效率滚动，比基于ITO的设备更好。这项工作为高性能简单的ITO OLED提供了一条路线。

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    Liu Shihao; Yu Hongwei; Zhang Qingyang; Qin Feisong; Zhang Xiang; Zhang Letian; Xie Wenfa;

  • 作者单位

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect Changchun 130012 Jilin Peoples R China;

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect Changchun 130012 Jilin Peoples R China;

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect Changchun 130012 Jilin Peoples R China;

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect Changchun 130012 Jilin Peoples R China;

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect Changchun 130012 Jilin Peoples R China;

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect Changchun 130012 Jilin Peoples R China;

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect Changchun 130012 Jilin Peoples R China;

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  • 正文语种 eng
  • 中图分类 物理化学（理论化学）、化学物理学;
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