Using EIS for diagnosis of dye-sensitized solar cells performance
Using EIS for diagnosis of dye-sensitized solar cells performance
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DOI：
10.1007/s10800-009-9806-5
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发表时间：
2009-11-01
影响因子：
2.9
通讯作者：
Di Carlo, A.
中科院分区：
文献类型：
--
作者：
Liberatore, M.;Decker, F.;Di Carlo, A.
在过去的十年中，对染料敏化太阳能电池（DSC）的兴趣有了极大的增长。电阻抗谱（EIS）是一种常用的电化学技术，用于研究这些光伏器件中的载流子动力学。我们使用EIS来表征我们的DSC；此外，为了简化阻抗电池的分析，我们实现并测量了带有反计数器或光-光电极的对称电池，通过分别分离计数器和光电极的贡献。特别是，我们提供了非常精确的光电极对称电池的照明，旨在接近一个完整的电池的实验条件。通过对实验数据的拟合，得到了对电极处的电荷转移电阻和电子在光电极处的渗透时间。此外，结合上述拟合程序的数据，整个细胞的模拟与实验数据吻合较好。
During the last decade interest in dye-sensitized solar cells (DSC) has grown enormously. Electrical impedance spectroscopy (EIS) is an electrochemical technique commonly used for investigation of charge carrier dynamics in these photovoltaic devices. We used EIS for characterization of our DSC; moreover, symmetric cells with counter-counter or photo-photo electrodes were realized and measured in order to simplify impedance cell analysis by separating the contribution of counter and photoelectrode, respectively. In particular, we provided very accurate illumination of the photoelectrode symmetric cell, aiming to approach the experimental conditions of a complete cell. By fitting of experimental data, we obtained values for the charge transfer resistance at the counter-electrode and the electron percolation time at the photoelectrode. Moreover, the simulation of a whole cell, combining the data from the fitting procedures above, was in good agreement with experimental data.