A water-based and metal-free dye solar cell exceeding 7% efficiency using a cationic poly(3,4-ethylenedioxythiophene) derivative,Chemical Science

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A water-based and metal-free dye solar cell exceeding 7% efficiency using a cationic poly(3,4-ethylenedioxythiophene) derivative
Chemical Science ( IF 7.6 ) Pub Date : 2020/01/14 , DOI: 10.1039/c9sc05596g
Federico Bella ₁ , Luca Porcarelli _{2,

3} , Daniele Mantione ₄ , Claudio Gerbaldi ₁ , Claudia Barolo ₅ , Michael Grätzel ₆ , David Mecerreyes _{3,

7}

Affiliation

A green, efficient and stable solar cell based only on water and safe and cheap elements of the periodic table is proposed in this work, finally consolidating (also from a sustainability viewpoint) the concept of “artificial photosynthesis” studied for decades by the scientific community. The concept of dye-sensitized solar cells is re-proposed here with a metal-free organic dye, an iodine-based electrolyte in a 100% aqueous environment and a new cathode (cationic PEDOT) synthesized for the first time with the aim of inhibiting the repulsion between the anions of redox couples and the PEDOT:PSS matrix commonly used as the counter-electrode. This elegant setup leads to a record efficiency of 7.02%, the highest value ever obtained for a water-based solar cell and, in general, for a photovoltaic device free of both organic solvents and expensive/heavy metals.

中文翻译：

使用阳离子聚(3,4-乙撑二氧噻吩)衍生物的水基无金属染料太阳能电池效率超过7%

这项工作提出了一种仅基于水和元素周期表中安全廉价元素的绿色、高效、稳定的太阳能电池，最终巩固了（也是从可持续性的角度）科学界研究了数十年的“人工光合作用”的概念。这里重新提出了染料敏化太阳能电池的概念，采用不含金属的有机染料、100%水环境中的碘基电解质以及首次合成的新型阴极（阳离子PEDOT），旨在抑制氧化还原对的阴离子与常用作对电极的 PEDOT:PSS 基质之间的排斥力。这种优雅的设置带来了 7.02% 的创纪录效率，这是水基太阳能电池以及一般不含有机溶剂和昂贵/重金属的光伏器件有史以来获得的最高值。

更新日期：2020-02-13

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