BELLA, Federico; PORCARELLI, Luca; MANTIONE, Daniele; GERBALDI, Claudio; BAROLO, Claudia; GRÄTZEL, Michael; MECERREYES, David

doi:10.1039/C9SC05596G

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BELLA, Federico

PORCARELLI, Luca
Institue for Polymer Materials [POLYMAT]

MANTIONE, Daniele
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies

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Chemical Science. 2020, vol. 11, n° 6, p. 1485-1493

The Royal Society of Chemistry

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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.< Leer menos

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

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