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High-performance dye-sensitized solar cells using Ag-doped CoS counter electrodes

机译：高性能染料敏化太阳能电池使用Ag掺杂COS计数器电极

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摘要

CoS has been emerging as a promising Pt-free counter electrode (CE) material for dye-sensitized solar cells (DSSCs) due to its satisfactory electrocatalytic properties for redox reactions. However, its low electronic and ionic conductivities have limited its use in DSSCs. The doping of Ag with appropriate amount significantly improved the properties of CoS for application as a CE. Ag-doped CoS samples with various doping amounts were prepared by a facile one-step hydrothermal approach. There were very sharp changes of morphologies and particle sizes after doping different amounts of Ag. It is found that the DSSC fabricated with the 5% Ag-doped CoS CE achieved an impressive power-conversion efficiency (PCE) of 8.35% which was higher than that of the DSSC with a Pt CE (8.17%) by 2.2%, while the DSSC consisting of undoped CoS only exhibited a PCE of 6.93%. Such an enhanced PCE could be attributed to the significantly improved electrochemical activity and mixed conductivity resulting from the Ag dopant. Therefore, the excellent electrocatalytic activity, facile preparation and low material cost of the Ag-doped CoS electrode provide it with promising potential for large-scale production of new-generation DSSCs.
机译：由于其令人满意的氧化还原反应的电催化性能，因此已经成为染料敏化太阳能电池（DSSCs）的有前途的PT的对电极（CE）材料。然而，其低电子和离子电导率限制了其在DSSCs中的使用。具有适当量的Ag的掺杂显着改善了CE作为CE的COS的性质。通过容易的一步水热方法制备具有各种掺杂量的Ag掺杂的COS样品。在掺杂不同量的Ag后，在掺杂不同量的Ag后，形态和粒子尺寸的变化非常敏锐。发现用5％Ag掺杂COS CE制造的DSSC令人印象深刻的功率转换效率（PCE）为8.35％，其高于DSSC的PT CE（8.17％）达到2.2％，同时由未掺杂的COS组成的DSSC仅表现出6.93％的PCE。这种增强的PCE可归因于来自Ag掺杂剂导致的显着改善的电化学活性和混合电导率。因此，具有优异的电催化活性，容易制剂和Ag掺杂的COS电极的低材料成本，提供了具有大规模生产的新一代DSSCs的有希望的潜力。

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  • 来源
    《RSC Advances》 |2018年第34期|共8页
  • 作者

    Zhuang Guoce; Liu Huiling; Chen Xiaobo;

  • 作者单位

    Yancheng Teachers Univ Sch New Energy &

    Elect Engn Yancheng 224051 Peoples R China;

    Yancheng Teachers Univ Sch New Energy &

    Elect Engn Yancheng 224051 Peoples R China;

    Yancheng Teachers Univ Sch New Energy &

    Elect Engn Yancheng 224051 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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