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首页> 外文期刊>Electrochimica Acta >Enhanced photovoltaic performance of quasi-solid-state dye-sensitized solar cells by incorporating a quaternized ammonium salt into poly(ethylene oxide)/poly(vinylidene fluoride-hexafluoropropylene) composite polymer electrolyte
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Enhanced photovoltaic performance of quasi-solid-state dye-sensitized solar cells by incorporating a quaternized ammonium salt into poly(ethylene oxide)/poly(vinylidene fluoride-hexafluoropropylene) composite polymer electrolyte

机译:通过将季铵盐掺入聚环氧乙烷/聚偏二氟乙烯-六氟丙烯复合聚合物电解质中来增强准固态染料敏化太阳能电池的光伏性能

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摘要

Quasi-solid-state dye-sensitized solar cells (DSSCs) are fabricated using tetraethylammonium tetrafluoroborate (Et_4NBF_4)-modified poly(ethylene oxide)/poly(vinylidene fluoride-hexafluoropropylene) (PEO/P(VDF-HFP)) composite polymer electrolytes (CPEs) along with KI and I_2. Compared to the original CPE, the addition of Et_4NBF_4 mainly changes the conformation of the polymer structure, reduces the crystallinity of the polymer electrolyte specifically, and hence, increases the triiodide diffusion coefficient and the ionic conductivity, leading to the notable improved photovoltaic performance of DSSC. The DSSC based on the Et_4NBF_4 (0.15 g)-modified CPE exhibits the best performance, with a short current density of 14.70 mA cm~(-2) and a photoenergy conversion efficiency of 6.243% under an irradiance of 96.17 mW cm~(-2).
机译:使用四氟硼酸四乙铵(Et_4NBF_4)改性的聚环氧乙烷/聚偏二氟乙烯-六氟丙烯(PEO / P(VD​​F-HFP))复合聚合物电解质制造准固态染料敏化太阳能电池(DSSC) CPE)以及KI和I_2。与原始CPE相比,添加Et_4NBF_4主要改变了聚合物结构的构象,具体降低了聚合物电解质的结晶度,因此增加了三碘化物的扩散系数和离子电导率,从而显着改善了DSSC的光伏性能。基于Et_4NBF_4(0.15 g)改性的CPE的DSSC表现出最好的性能,在96.17 mW cm〜(-)的辐照下,短电流密度为14.70 mA cm〜(-2),光能转换效率为6.243%。 2)。

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