Effect of Ionic Liquids with Different Cations in I<sup>-</sup>/I<sub>3</sub><sup>-</sup>Redox Electrolyte on the Performance of Dye-sensitized Solar Cells
作者:Tae-Yeon Cho、Soon-Gil Yoon、S.S. Sekhon、Chi-Hwan Han
DOI:10.5012/bkcs.2011.32.6.2058
日期:2011.6.20
The effect of the addition of ionic liquids with four different cations (imidazolium, pyrrolidinium, piperidinium and pyridinium) on the performance of dye-sensitized $TiO_2$ solar cells based on electrolytes containing a t-butylpyridine (TBP) in 3-methoxypropionitrile (MPN) was studied. A total of 18 ionic liquids with mono-, di- and tri-alkyl derivatives were used in the present study, and among them a pyridinium cation with a mono-alkyl group showed better cell efficiency than the others. The best photoelectric conversion efficiency, 7.213%, was obtained using 1-hexylpyridinium iodide with an open-circuit photovoltage ($V_oc}$) = 0.731 V, a short-circuit photocurrent density ($J_sc}$) = 16.175 $mA/cm^2$, and a fill factor (ff) = 0.610 under AM1.5 and 100 $mW/cm^2$ illumination.
研究了添加具有四种不同阳离子(咪唑鎓、吡咯烷鎓、哌啶鎓和吡啶鎓)的离子液体对基于含有叔丁基吡啶(TBP)的3-甲氧基丙腈(MPN)电解质的染料敏化$TiO_2$太阳能电池性能的影响。本研究中共使用了18种单、二和三烷基衍生物的离子液体,其中具有单烷基的吡啶鎓阳离子显示出比其他离子液体更高的电池效率。使用1-己基吡啶碘化物获得了最佳的光电转换效率,为7.213%,其开路光电压($V_oc}$)= 0.731 V,短路光电流密度($J_sc}$)= 16.175 $mA/cm^2$,填充因子(ff)= 0.610,在AM1.5和100 $mW/cm^2$光照下。