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首页> 外文期刊>Journal of materials science >Stability enhancement of ITO-free non-inverted PTB7:PC_(71)BM solar cell using two-step post-treated PEDOT:PSS
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Stability enhancement of ITO-free non-inverted PTB7:PC_(71)BM solar cell using two-step post-treated PEDOT:PSS

机译：使用两步后处理的PEDOT：PSS增强了无ITO的同相PTB7：PC_（71）BM太阳能电池的稳定性

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摘要

The conductivity and stability of specially treated PEDOT:PSS thin films are investigated. Based on the proposed treatment method, ITO-free PTB7:PC~(71)BM organic solar cells are fabricated and the electrical properties of the cells are analyzed. It is shown that by applying a two-step post-treatment method using methanol and ethylene glycol, the conductivity of the PEDOT:PSS thin film increases from 0.9 to 1448 S/cm, and at the same time, a significant improvement of the stability of the layer over time is achieved. It is shown that after 30 days of aging under high humidity condition, the conductivity remains above 70% of its initial value, which is a remarkable result compared with the results reported in the literature. In this paper, important factors affecting the conductivity and stability of the treated layer are studied in detail. In addition, the effect of immersion time in methanol on the conductivity of the layer is also investigated and it is found that dipping times less than 3 min have no appreciable effects on the improvement of the conductivity. An ITO-free non-inverted PTB7:PC~(71)BM solar cell is also fabricated using the proposed post-treated PEDOT:PSS thin films as the transparent anode. The power conversion efficiency of the resulting cell is 5.8%. The stability of the fabricated ITO-free cells is considerably better than the stability of the non-treated ITO-free cells or the cells made using ITO as anode.
机译：研究了经过特殊处理的PEDOT：PSS薄膜的导电性和稳定性。基于提出的处理方法，制备了无ITO的PTB7：PC〜（71）BM有机太阳能电池，并对其电性能进行了分析。结果表明，通过使用甲醇和乙二醇的两步后处理方法，PEDOT：PSS薄膜的电导率从0.9提高到1448 S / cm，同时显着提高了稳定性随着时间的流逝实现了层数的增加。结果表明，在高湿度条件下老化30天后，电导率保持在其初始值的70％以上，与文献报道的结果相比，这是一个了不起的结果。在本文中，详细研究了影响处理层电导率和稳定性的重要因素。此外，还研究了浸入甲醇的时间对层电导率的影响，发现浸渍时间小于3分钟对提高电导率没有明显影响。还使用拟议的后处理PEDOT：PSS薄膜作为透明阳极，制造了无ITO的非反转PTB7：PC〜（71）BM太阳能电池。所得电池的功率转换效率为5.8％。所制造的无ITO电池的稳定性大大优于未处理的无ITO电池或使用ITO作为阳极制成的电池的稳定性。

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