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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >HxMoO3-y nanobelts: an excellent alternative to carbon electrodes for high performance mesoscopic perovskite solar cells
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HxMoO3-y nanobelts: an excellent alternative to carbon electrodes for high performance mesoscopic perovskite solar cells

机译：HXMOO3-Y纳米螺纹：高性能介于培养钙钛矿太阳能电池的碳电极优异的替代方案

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摘要

Carbon-based hole-conductor-free perovskite solar cells (C-PSCs) are considered as a promising photovoltaic technology toward commercialization, owing to their low cost and superior stability. However, efforts to further improve their efficiency have been hampered by the hole-extraction barrier at the Schottky contact between carbon and the perovskite. A conventional approach to resolve this issue is incorporating a hole-transport material (HTM) into the mesoscopic skeleton or chemical modification of the carbon electrode. Here, we show an innovative strategy that uses solution-processed hydrogen molybdenum bronze (HxMoO3-y) nanobelts, an n-type HTM with high work function and electrical conductivity, as the sole electrode material to enhance the hole-extraction process and realize efficient PSCs for the first time. The mesoscopic cell configuration of FTO/c-TiO2/m-TiO2/m-Al2O3/HxMoO3-y with perovskite infiltration delivered a champion power conversion efficiency (PCE) of 14.5%, which compares favorably with 13.3% of typical high temperature C-PSCs. This increase in cell efficiency stems primarily from the enhancement in open circuit voltage and short circuit current, which is due to the HxMoO3-y electrode with more favorable energy alignment and higher hole-extraction ability than the carbon electrode. These results show the potential of HxMoO3-y nanobelts as an efficient electrode for realizing high-performance mesoscopic PSCs.
机译：由于其低成本和卓越的稳定性，碳基孔导体无钙钛矿太阳能电池（C-PSC）被认为是对商业化的有前途的光伏技术。然而，在碳和钙钛矿之间的肖特基接触的孔提取屏障中，努力进一步提高其效率的努力。解决该问题的传统方法是将空穴传输材料（HTM）掺入介质骨架或碳电极的化学改性。在这里，我们展示了一种创新的策略，它使用溶液加工的氢钼青铜（HXMOO3-Y）纳米螺纹，N型HTM具有高功函数和导电性，作为增强空穴提取过程的唯一电极材料，实现有效PSC第一次。 FTO / C-TiO2 / M-TiO2 / M-Al2O3 / HXMOO3-Y的介观细胞构型与钙钛矿浸润的冠军转换效率（PCE）为14.5％，这与典型高温的13.3％相比，比较PSC。电池效率的这种增加主要来自开路电压和短路电流的增强，这是由于HXMoo3-Y电极具有比碳电极更有利的能量对准和更高的孔提取能力。这些结果表明HXMOO3-Y纳米座的电位作为实现高性能介观PSC的有效电极。

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    Zhang Hua; Wang Huan; Yang Yinglong; Hu Chen; Bai Yang; Zhang Teng; Chen Wei; Yang Shihe;

  • 作者单位

    Hong Kong Univ Sci &

    Technol Dept Chem Kowloon Clear Water Bay Hong Kong Peoples R China;

    Chinese Acad Sci Shenzhen Inst Adv Technol Shenzhen Key Lab Nanobiomech Shenzhen 518055 Guangdong Peoples R China;

    Hong Kong Univ Sci &

    Technol Dept Chem Kowloon Clear Water Bay Hong Kong Peoples R China;

    Hong Kong Univ Sci &

    Technol Dept Chem Kowloon Clear Water Bay Hong Kong Peoples R China;

    Hong Kong Univ Sci &

    Technol Dept Chem Kowloon Clear Water Bay Hong Kong Peoples R China;

    Hong Kong Univ Sci &

    Technol Dept Chem Kowloon Clear Water Bay Hong Kong Peoples R China;

    Chinese Acad Sci Shenzhen Inst Adv Technol Shenzhen Key Lab Nanobiomech Shenzhen 518055 Guangdong Peoples R China;

    Hong Kong Univ Sci &

    Technol Dept Chem Kowloon Clear Water Bay Hong Kong Peoples R China;

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  • 正文语种 eng
  • 中图分类 工程材料学;
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