Evaluation of treatment effects for high-performance dye-sensitized solar cells using equivalent circuit analysis
Evaluation of treatment effects for high-performance dye-sensitized solar cells using equivalent circuit analysis
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DOI：
10.1016/j.tsf.2005.09.145
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发表时间：
2006-06-19
期刊：
影响因子：
2.1
通讯作者：
Mori, T
中科院分区：
文献类型：
--
作者：
Murayama, M;Mori, T
采用单二极管模型进行等效电路分析是评价染料敏化太阳能电池(DSC)电机理和有效处理的一种更简单、更方便的方法。在0.1W/m(2)和1.5 W/m(2)的辐射下，测量经醋酸或4，4-丁基吡啶处理的细胞的电流-电压(I-V)曲线。根据I-V曲线计算电池性能和等效电路参数。基于残差因素的评估有助于更好地将等效电路拟合到I-V曲线。对于高性能的DSC，二极管因数值通常大于2。醋酸处理能有效地降低电池的串联电阻，增加短路电流。相反，4，叔丁基吡啶通过增加电池的分流电阻而有效地提高了开路电压。以往的解释认为，醋酸降低了TiO2层的内阻，丁基吡啶降低了从TiO2层到电解液的反电子转移。(C)2005年，爱思唯尔出版。
Equivalent circuit analysis using a one-diode model was carried out as a simpler, more convenient method to evaluate the electric mechanism and to employ effective treatment of a dye-sensitized solar cell (DSC). Cells treated using acetic acid or 4,t-butylpyridine were measured under irradiation (0.1 W/m(2), AM 1.5) to obtain current-voltage (I-V) curves. Cell performance and equivalent circuit parameters were calculated from the I-V curves. Evaluation based on residual factors was useful for better fitting of the equivalent circuit to the I-V curve. The diode factor value was often over two for high-performance DSCs. Acetic acid treatment was effective to increase the short-circuit current by decreasing the series resistance of cells. In contrast, 4,t-butylpyridine was effective to increase open-circuit voltage by increasing the cell shunt resistance. Previous explanations considered that acetic acid worked to decrease the internal resistance of the TiO2 layer and butylpyridine worked to lower the back-electron-transfer from the TiO2 to the electrolyte. (c) 2005 Published by Elsevier B.V.