A water-based and metal-free dye solar cell exceeding 7% efficiency using a cationic poly(3,4-ethylenedioxythiophene) derivative.
A water-based and metal-free dye solar cell exceeding 7% efficiency using a cationic poly(3,4-ethylenedioxythiophene) derivative.
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使用阳离子聚（3,4-乙二基二苯乙烯）衍生物的水基和无金属染料太阳能电池超过7％的效率。
DOI：
10.1039/c9sc05596g
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发表时间：
2020-01-14
期刊：
影响因子：
8.4
通讯作者：
Mecerreyes D
中科院分区：
文献类型：
--
作者：
Bella F;Porcarelli L;Mantione D;Gerbaldi C;Barolo C;Grätzel M;Mecerreyes D
这项工作提出了一种仅基于水和周期表中安全廉价的元素的绿色、高效和稳定的太阳能电池，最终巩固了（也是从可持续性的角度）科学界研究了几十年的“人工光合作用”概念。染料敏化太阳能电池的概念在这里被重新提出，具有不含金属的有机染料，在100%水环境中的碘基电解质和首次合成的新阴极（阳离子PEDOT），其目的是抑制氧化还原对的阴离子与通常用作对电极的PEDOT：PSS基质之间的排斥。这种优雅的设置导致了7.02%的创纪录效率，这是水基太阳能电池和一般不含有机溶剂和昂贵/重金属的光伏器件所获得的最高值。一种新型阳离子PEDOT衍生物可抑制碘基电解质中的排斥现象，从而提高水性太阳能电池的效率。
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. A new cationic PEDOT derivative inhibits repulsion phenomena within iodine-based electrolytes, boosting the efficiency of aqueous solar cells.