Electrochemically Deposited CoS Films as Counter Electrodes for Efficient Quantum Dot-Sensitized Solar Cells

Electrochemically Deposited CoS Films as Counter Electrodes for Efficient Quantum Dot-Sensitized Solar Cells
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电化学沉积 CoS 薄膜作为高效量子点敏化太阳能电池的对电极

DOI:
10.1149/2.107309jes
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发表时间:
2013
影响因子:
3.9
通讯作者:
Mingkui Wang
Mingkui Wang
中科院分区:
工程技术4区
文献类型:
--
作者:
Dekang Huang;Wei Chen;Yan Shen;Mingkui Wang

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在这项研究中,我们报道了在ITO导电玻璃衬底上电化学沉积CoS作为高效量子点敏化太阳能电池(qdsc)的对电极。与化学浴沉积(CBD)制备的CoS/ITO对电极或广泛使用的热镀FTO玻璃电极相比,CoS/ITO对电极对多硫化物的还原表现出显著的电催化活性。在1个太阳光照(100 mW cm−2 AM 1.5 G)下,基于CdS/CdSe的QDSC的功率转换效率(PCE)为5.2%,填充系数为0.60,优于CoS/ITO(由CBD制成)基电池(PCE 4.06%, FF 0.55)和Pt/FTO基电池(PCE 3.64%, FF 0.52)。基于CdS/CdSe的QDSC的光伏性能的增强可能归因于对电极上多硫化物还原的小充电器转移电阻。
In this study, we report on electrochemically deposited CoS onto ITO conducting glass substrates as counter electrodes for efficient quantum dot-sensitized solar cells (QDSCs). The CoS/ITO counter electrodes show remarkable electrocatalytic activity for the reduction of polysulfide compared to that of the CoS/ITO counter electrodes fabricated by chemical bath deposition (CBD) or the widely used thermal platinized FTO glass electrode. A CdS/CdSe based QDSC in combination with this type of counter electrode shows appreciated power conversion efficiency (PCE) of 5.2%, accompanied by 0.60 in fill factor under 1 sun illumination (100 mW cm− 2 AM 1.5 G), which is superior than that of CoS/ITO (fabricated by CBD) based cell (PCE 4.06%, FF 0.55) and Pt/FTO based cell (PCE 3.64%, FF 0.52). The augmented photovoltaic performance of the CdS/CdSe based QDSC may be attributed to a small charger-transfer resistance for the reduction of polysulfide on the counter electrode.
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