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首页> 外文期刊>Advanced energy materials >Water Ingress in Encapsulated Inverted Organic Solar Cells: Correlating Infrared Imaging and Photovoltaic Performance
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Water Ingress in Encapsulated Inverted Organic Solar Cells: Correlating Infrared Imaging and Photovoltaic Performance

机译：密封的倒置有机太阳能电池中的水进入：红外成像和光伏性能的相关性

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摘要

Understanding the degradation and failure mechanisms of organic photovoltaic devices is a key requirement for this technology to mature toward a reliable product. Here, an investigation on accelerated temperature and moisture long-term stability testing (>20 000 h) of inverted and glass-encapsulated poly(3-hexylthiophene)/phenyl-C61-butyric acid methyl ester solar cells is presented. The degradation kinetics is analyzed using the Arrhenius model and the resulting activation energy for the diffusion of water is measured to be ≈43 kJ mol−1. Through comparison of electroluminescence imaging, lock-in thermography, and photoluminescence mapping, the device performance is correlated with the loss of effective cell area and it is shown that the reaction of water at the hole extraction/active layer interface is likely to be the dominant cause for long-term device failure. The diffusion of water through the packaged solar cell is described using classical diffusion theory. Based on an analytical solution of a simple diffusion model, the diffusion coefficient is estimated to be 4 × 10−12 m2 s−1. A shelf life of 100 000 h is anticipated at 65 °C/85% RH using a 9.3 cm wide protective adhesive rim. The findings of this study may inform strategies for predicting lifetimes of organic solar cells and modules based on local in situ tracking of moisture-induced device performance loss using IR imaging.
机译：了解有机光伏器件的退化和故障机理是该技术向可靠产品成熟的关键要求。在此，对倒置和玻璃封装的聚（3-己基噻吩）/苯基-C61-丁酸甲酯太阳能电池的加速温度和湿度长期稳定性测试（> 200000小时）进行了研究。使用Arrhenius模型分析了降解动力学，测得的扩散水的活化能为≈43kJ mol-1。通过电致发光成像，锁定热成像和光致发光映射的比较，器件性能与有效单元面积的损失相关，并且表明在空穴提取/活性层界面上水的反应可能是主要的导致长期设备故障。使用经典扩散理论描述了水通过封装太阳能电池的扩散。基于简单扩散模型的解析解，扩散系数估计为4×10-12 m2 s-1。使用9.3厘米宽的保护性胶圈，在65°C / 85％RH的条件下，预期保质期为100000 h。这项研究的发现可能会为基于红外成像成像的水分引起的器件性能损失的局部原位跟踪提供依据，从而预测有机太阳能电池和模块的使用寿命。

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  • 来源
    《Advanced energy materials》 |2015年第20期|1-11|共11页
  • 作者

    Jens Adams; Michael Salvador; Luca Lucera; Stefan Langner; George D. Spyropoulos; Frank W. Fecher; Monika M. Voigt; Simon A. Dowland; Andres Osvet; Hans-Joachim Egelhaaf; Christoph J. Brabec;

  • 作者单位

    Bavarian Center for Applied Energy Research (ZAE Bayern) Solar Factory of the Future NÜrnberg Germany;

    Institute of Materials for Electronics and Energy Technology (i-MEET) Friedrich-Alexander-Universitt Erlangen-NÜrnberg (FAU) Erlangen Germany;

    Instituto de TelecomunicaÇÕes Instituto Superior Tecnico Lisboa Portugal;

    Bavarian Center for Applied Energy Research (ZAE Bayern) Solar Factory of the Future NÜrnberg Germany;

    Institute of Materials for Electronics and Energy Technology (i-MEET) Friedrich-Alexander-Universitt Erlangen-NÜrnberg (FAU) Erlangen Germany;

    Bavarian Center for Applied Energy Research (ZAE Bayern) Solar Factory of the Future NÜrnberg Germany;

    Bavarian Center for Applied Energy Research (ZAE Bayern) Solar Factory of the Future NÜrnberg Germany;

    Bavarian Center for Applied Energy Research (ZAE Bayern) Solar Factory of the Future NÜrnberg Germany;

    Institute of Materials for Electronics and Energy Technology (i-MEET) Friedrich-Alexander-Universitt Erlangen-NÜrnberg (FAU) Erlangen Germany;

    Belectric OPV GmbH NÜrnberg Germany;

    Institute of Materials for Electronics and Energy Technology (i-MEET) Friedrich-Alexander-Universitt Erlangen-NÜrnberg (FAU) Erlangen Germany;

    Bavarian Center for Applied Energy Research (ZAE Bayern) Solar Factory of the Future NÜrnberg Germany;

    Bavarian Center for Applied Energy Research (ZAE Bayern) Solar Factory of the Future NÜrnberg Germany;

    Institute of Materials for Electronics and Energy Technology (i-MEET) Friedrich-Alexander-Universitt Erlangen-NÜrnberg (FAU) Erlangen Germany;

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  • 关键词

    electroluminescence imaging; lock-in thermography; long-term stability; organic photovoltaics; water diffusion;

    机译：电致发光成像;锁定热成像;长期稳定性;有机光伏;水扩散;

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