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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Preparation of CoS2 counter electrode on Ni sheet for QDSSCs via electrophoretic deposition of ZIF-67
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Preparation of CoS2 counter electrode on Ni sheet for QDSSCs via electrophoretic deposition of ZIF-67

机译：ZIF-67电泳沉积QDSSCS对QDSSCS的COS2对电极的制备

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摘要

Preparing counter electrode (CE) with low cost and high catalytic activity is a method for improving the photovoltaic performance of quantum dot-sensitized solar cells (QDSSCs). Here, ZIF-67 thin films are prepared on an Ni sheet and FFO-conducting glass substrate by electrophoretic deposition at different applied electric fields, and then efficient CoS2/Ni and CoS2/FTO electrodes are obtained by vulcanizing the ZIF-67 thin films using thioacetamide. The prepared CoS2 thin films are characterized by the measurements of the scanning electron microscope, x-ray photoelectron spectroscopy, x-ray powder diffraction and Fourier transform infrared spectra. Further, the CoS2/Ni and CoS2/FTO thin films are used as CEs to fabricate QDSSCs. Photocurrent-voltage curves, electrochemical impedance spectroscopies and Tafel curves are measured to evaluate their photoelectrochemical properties. The short-circuit photocurrent value of QDSSC, based on the CoS2/Ni CE, is significantly unproved compared with that of the cell based on the CoS2/FTO, and thus the light-to-electric conversion efficiency increases from 1.95% to 3.24%. The enhancement mechanism of electrocatalytic activity and photovoltaic performance of CE prepared on an Ni sheet are analyzed to be less resistant than an Ni sheet and have a higher charge transfer rate between CE and electrolyte.
机译：用低成本和高催化活性制备对电极（CE）是改善量子点敏化太阳能电池（QDSSCs）的光伏性能的方法。这里，通过不同施加的电场的电泳沉积在Ni片材和FFO导电玻璃基板上制备ZIF-67薄膜，然后通过使用ZIF-67薄膜通过硫化ZIF-67薄膜而获得有效的COS2 / Ni和COS2 / FTO电极硫代乙酰胺。制备的COS2薄膜的特征在于测量扫描电子显微镜，X射线光电子能谱，X射线粉末衍射和傅里叶变换红外光谱。此外，COS2 / Ni和COS2 / FTO薄膜用作CE以制造QDSSCs。测量光电流 - 电压曲线，电化学阻抗谱和Tafel曲线以评估它们的光电化学性质。基于COS2 / Ni Ce的QDSSC的短路光电流值与基于COS2 / FTO的电池相比，显着未经制造，因此光电转换效率从1.95％增加到3.24％ 。分析在Ni片材上制备的Ce的电催化活性和光伏性能的增强机制，耐镍板的耐抗性较小，并且在Ce和电解质之间具有更高的电荷转移速率。

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