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Effect of counter-ions on the properties and performance of non-conjugated polyelectrolyte interlayers in solar cell and transistor devices

机译:反离子对太阳能电池和晶体管器件中非共轭聚电解质中间层性能和性能的影响

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摘要

We have investigated a series of non-conjugated polyelectrolytes (NPEs) which are based on a polyethylenimine (PEI) backbone with various counterions, such as Br- I- and BIm(4)(-), as interfacial layers at the electrodes of solar cells and transistor devices to improve the power conversion efficiency (PCE) and device performance. This new series of NPEs with different counterions are capable of forming electric dipoles at NPE/metal electrode interfaces; as a consequence tuning of the energy levels, and work function (WF) of the electrodes is possible. Using this approach, the PCE of organic solar cells could be improved from 1.05% (without NPEs) to 6.77% (with NPEs) while the charge carrier mobility and on/off ratio of FET devices could be improved, showing the broad utility of this type of material. This study provides a novel approach towards investigating the influence of ions on interfacial dipoles and electrode WFs in solution-processed semiconducting devices.
机译:我们研究了一系列的非共轭聚电解质(NPE),其基于具有各种抗衡离子的聚乙烯亚胺(PEI)骨架,例如BR-I和BIM(4)( - ),作为太阳电极的界面层 电池和晶体管器件提高功率转换效率(PCE)和设备性能。 这种具有不同抗衡离子的新系列NPE能够在NPE /金属电极接口处形成电偶极子; 作为结果调整能量水平,并且电极的功函数(WF)是可能的。 使用这种方法,有机太阳能电池的PCE可以从1.05%(没有NPE)改善为6.77%(带NPE),而FET器件的电荷载流子迁移率和开/关比可以改善,显示出该幂的广泛效用 材料类型。 该研究提供了一种研究离子对溶液加工半导体器件中界面偶极子和电极WFS的影响的新方法。

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  • 来源
    《RSC Advances》 |2019年第36期|共7页
  • 作者单位

    Dong A Univ Dept Mat Phys Busan 49315 South Korea;

    Dong A Univ Dept Mat Phys Busan 49315 South Korea;

    Dong A Univ Dept Mat Phys Busan 49315 South Korea;

    Yonsei Univ Inst Phys &

    Appl Phys Seoul 03722 South Korea;

    Dongguk Univ Div Phys &

    Semicond Sci Seoul 04620 South Korea;

    Dongguk Univ Div Phys &

    Semicond Sci Seoul 04620 South Korea;

    Dong A Univ Dept Mat Phys Busan 49315 South Korea;

    Kyung Hee Univ Dept Chem Seoul 02453 South Korea;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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