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首页> 外文期刊>Organic Electronics >Charge accumulation induced S-shape J-V curves in bilayer heterojunction organic solar cells
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Charge accumulation induced S-shape J-V curves in bilayer heterojunction organic solar cells

机译：双层异质结有机太阳能电池中电荷积累引起的S形J-V曲线

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摘要

We study the origin of the S-shape effect in the current-voltage curve of bilayer heterojunction organic solar cell induced by the exciton blocking layer (EBL). By gradually increasing the BCP thickness, the J-V curves change from exponential shape to S-shape, leading to a twofold degraded in the fill factor (FF). The variations of the J-V curves are attributed to the charge accumulation effect induced by the BCP layer. The charge accumulation phenomenon is further verified by the C-V measurements and a numerical model based on continuity and transport equations is developed to qualitatively reproduce the S-shape effect. Our finding provides insight into the origin of S-shape effect in bilayer heterojunction photovoltaic devices induced by the exciton blocking layer and reveals the importance of controlling charge accumulation for high performance OPVs especially the tandem devices.
机译：我们研究了由激子阻挡层（EBL）引起的双层异质结有机太阳能电池电流-电压曲线中S形效应的起源。通过逐渐增加BCP厚度，J-V曲线从指数形状变为S形，导致填充系数（FF）降低两倍。 J-V曲线的变化归因于由BCP层引起的电荷累积效应。通过C-V测量进一步验证了电荷积累现象，并建立了基于连续性和传输方程的数值模型，以定性地再现S形效应。我们的发现提供了由激子阻挡层引起的双层异质结光伏器件中S形效应的起源的见解，并揭示了控制电荷积累对于高性能OPV（尤其是串联器件）的重要性。

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  • 来源
    《Organic Electronics》 |2011年第6期|p.880-885|共6页
  • 作者

    J.C. Wang; X.C. Ren; S.Q. Shi; C.W. Leung; Paddy K.L. Chan;

  • 作者单位

    Department of Mechanical Engineering, Hong Kong Polytechnic University, Hong Kong China;

    Department of Mechanical Engineering, Hong Kong Polytechnic University, Hong Kong China;

    Department of Mechanical Engineering, Hong Kong Polytechnic University, Hong Kong China;

    Department of Applied Physics, Hong Kong Polytechnic University, Hong Kong, China;

    Department of Mechanical Engineering, Hong Kong Polytechnic University, Hong Kong China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    organic solar cell; s-shape; charge accumulation; bilayer heterojunction;

    机译：有机太阳能电池;S形;电荷积累;双层异质结;

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