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首页> 外文期刊>RSC Advances >Toward highly efficient CdS/CdSe quantum dot-sensitized solar cells incorporating a fullerene hybrid-nanostructure counter electrode on transparent conductive substrates
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Toward highly efficient CdS/CdSe quantum dot-sensitized solar cells incorporating a fullerene hybrid-nanostructure counter electrode on transparent conductive substrates

机译：致力于在透明导电基板上结合富勒烯杂化纳米结构对电极的高效CdS / CdSe量子点敏化太阳能电池

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摘要

At present, the performance of quantum dot-sensitized solar cells (QDSCs) is still much lower than that of conventional dye-sensitized solar cells. Besides efforts on the development of photoanodes, a new generation of materials for counter electrodes is also urgently needed to optimize the structure of QDSCs and improve their power conversion efficiency (PCE). Here, fullerene (C-60) films on transparent conductive substrates have been prepared through a cost-effective doctor blade process, which were subsequently applied as counter electrodes in QDSCs. Compared to conventional counter electrodes composed of Pt or activated carbon (AC) electrodes, the C-60-based counter electrodes exhibit better electrocatalytic activity, lower charge-transfer resistance and higher exchange current density. Based on these merits, the QDSC with C-60-based counter electrode and a polysulfide electrolyte shows an improved PCE of 4.18% under simulated 100 mW cm(-2) AM 1.5 illumination. In contrast, the PCEs of the QDSC using Pt or activated carbon as counter electrode under the same conditions are only 1.17% and 3.48%, respectively. Stability test reveals that the C-60-based counter electrode has good stability at room temperature.
机译：目前，量子点敏化太阳能电池（QDSC）的性能仍远低于常规染料敏化太阳能电池的性能。除了努力开发光阳极外，还迫切需要新一代的对电极材料来优化QDSC的结构并提高其功率转换效率（PCE）。在这里，透明导电基板上的富勒烯（C-60）膜已通过具有成本效益的刮刀工艺制备，随后被用作QDSC中的对电极。与常规的由Pt或活性炭（AC）电极组成的对电极相比，基于C-60的对电极表现出更好的电催化活性，更低的电荷转移电阻和更高的交换电流密度。基于这些优点，带有基于C-60的对电极和多硫化物电解质的QDSC在模拟的100 mW cm（-2）AM 1.5照明下显示出4.18％的改善的PCE。相比之下，在相同条件下使用Pt或活性炭作为对电极的QDSC的PCE分别仅为1.17％和3.48％。稳定性测试表明，基于C-60的对电极在室温下具有良好的稳定性。

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