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首页> 外文期刊>ACS applied materials & interfaces >Dual Functional Polymer Interlayer for Facilitating Ion Transport and Reducing Charge Recombination in Dye-Sensitized Solar Cells
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Dual Functional Polymer Interlayer for Facilitating Ion Transport and Reducing Charge Recombination in Dye-Sensitized Solar Cells

机译：双功能聚合物中间层，可促进染料敏化太阳能电池中的离子传输并减少电荷复合。

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摘要

Dye-sensitized solar cells (DSSCs) present low-cost alternatives to conventional wafer-based inorganic solar cells and have remarkable power conversion efficiency. To further enhance performance, we propose a new DSSC architecture with a novel dual-functional polymer interlayer that prevents charge recombination and facilitates ionic conduction, as well as maintaining dye loading and regeneration. Poly(vinylidene fluoride-trifluoroethylene) (p-(VDF-TrFE)) was coated on the outside of a dye-sensitized TiO2 photoanode by a simple solution process that did not sacrifice the amount of adsorbed dye molecules in the DSSC device. Light-intensity-modulated photocurrent and photovoltage spectroscopy revealed that the proposed p(VDF-TrFE)-coated anode yielded longer electron lifetime and improved the injection of photogenerated electrons into TiO2, thereby reducing the electron transport time. Comparative cyclic voltammetry and UV-visible absorption spectroscopy based on a ferrocene ferrocenium external standard material demonstrated that p(VDF-TrFE) enhanced the power conversion efficiency from 7.67% to 9.11%. This dual functional p(VDF-TrFE) interlayer is a promising candidate for improving the performance of DSSCs and can also be employed in other electrochemical devices.
机译：染料敏化太阳能电池（DSSC）为传统的基于晶圆的无机太阳能电池提供了低成本的替代品，并且具有卓越的功率转换效率。为了进一步提高性能，我们提出了一种具有新型双功能聚合物夹层的新型DSSC体系结构，该夹层可防止电荷重组并促进离子传导，并保持染料的负载和再生。通过简单的溶液工艺将聚偏二氟乙烯-三氟乙烯（p-（VDF-TrFE））涂覆在染料敏化的TiO2光电阳极的外部，该工艺不会牺牲DSSC装置中吸附的染料分子的数量。光强度调制的光电流和光电压光谱表明，提出的p（VDF-TrFE）涂层阳极可产生更长的电子寿命，并改善了光生电子向TiO2的注入，从而缩短了电子传输时间。基于二茂铁二茂铁外标材料的比较循环伏安法和紫外可见吸收光谱法表明，p（VDF-TrFE）将功率转换效率从7.67％提高到9.11％。这种双功能p（VDF-TrFE）中间层是改善DSSC性能的有前途的候选者，也可以用于其他电化学装置中。

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