Nicolas Leclerc*, Patricia Chávez, Olzhas A. Ibraikulov, Thomas Heiser, Patrick Lévêque 1. Institut de Chimie et Procédés pour l’Energie, l’Environnement et la Santé, ICPEES, Université de
Solution-processed bulk heterojunction solar cells have undergone remarkable output acceleration over the past two decades, achieving power conversion efficiencies above 10%. This remarkable advancement is the product of a simultaneous production of more sophisticated system architectures and engineered polymers in semiconduction. Recently, fluorination of the conjugated polymer backbone has appeared to be a particularly promising approach for developing effective semiconducting polymers. As a matter of fact, most currently best-performing semiconducting polymers are using fluorine atoms in their conjugated backbone. Solar cells based on polymer composite active layers were first identified in 1995 as Solution-processed bulk heterojunction (BHJ). These devices have recently experienced a remarkable acceleration in efficiency after a slow initial increase in power conversion efficiencies (PCEs), hitting
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