Influence of 1-methyl-3-propylimidazolium iodide on I3−/I− redox behavior and photovoltaic performance of dye-sensitized solar cells
Influence of 1-methyl-3-propylimidazolium iodide on I3−/I− redox behavior and photovoltaic performance of dye-sensitized solar cells
复制标题
DOI：
10.1016/j.solmat.2004.09.004
复制
发表时间：
2005-04
影响因子：
6.9
通讯作者：
Shi Cheng-wu;Dai Song-Yuan;Wang Kong-Jia;Pan Xu;Guo Li;Zeng Long-yue;Hu Lin-hua;Kong Fan-tai
中科院分区：
文献类型：
--
作者：
Shi Cheng-wu;Dai Song-Yuan;Wang Kong-Jia;Pan Xu;Guo Li;Zeng Long-yue;Hu Lin-hua;Kong Fan-tai
用循环伏安法和电化学阻抗谱研究了I{sup-}和I{sub3}{sup-}在不同浓度的1-甲基-3-丙基咪唑(MPII)和碘的3-甲氧基丙腈(MePN)中的氧化还原行为。结果表明，在含有1.4M MPII的MePN中，三碘离子和碘离子的表观扩散系数(D)、串联电阻(R{SUB S})和电荷转移电阻(R{SUB ct})随I{sub3}{sup-}浓度的增加而略有下降。此外，三碘离子和碘离子对染料敏化太阳能电池(DSCs)的影响应作为一个整体来考虑。采用1.4MMPII，0.1MLII，0.1MI{sub2}，0.5M TBP，In MePN的DSCs的短路光电流密度(J{subsc})为14.44 mA/cm{sup2}，开路电压(V{suboc})为0.72 V，填充因子(Ff)为0.69，对应于一个太阳(AM1.5)下的光电转换效率({eta})为7.17%。(作者)
In this paper, we investigated redox behavior of I{sup -} and I{sub 3}{sup -} in 3-methoxypropionitrile (MePN) with different concentrations of 1-methyl-3-propylimidazolium iodide (MPII) and iodine by cyclic voltammetry and electrochemical impedance spectroscopy. It was found that the apparent diffusion coefficient (D) values of triiodide and iodide ions, the serial resistance (R{sub s}) and the charge-transfer resistance (R{sub ct}) decreased slightly with increase of the concentration of I{sub 3}{sup -} in MePN containing 1.4 M MPII. Moreover, the R{sub ct} and D values of triiodide and iodide ions affection on dye-sensitized solar cells (DSCs) should be considered as a whole. The DSCs with the electrolyte (1.4 M MPII, 0.1 M LiI, 0.1 M I{sub 2}, 0.5 M TBP, in MePN) gave short circuit photocurrent density (J{sub sc}) of 14.44 mA/cm{sup 2}, open circuit voltage (V{sub oc}) of 0.72 V, and fill factor (FF) of 0.69, corresponding to the photoelectric conversion efficiency ({eta}) of 7.17% under one Sun (AM1.5). (Author)