High-Entropy Mixtures of Pristine Fullerenes for Solution-Processed Transistors and Solar Cells.

Mendaza, Amaia Diaz de Zerio; Melianas, Armantas; Rossbauer, Stephan; Bäcke, Olof; Nordstierna, Lars; Erhart, Paul; Olsson, Eva; Anthopoulos, Thomas D et al. · Adv Mater · 2015

basic_science · Level V

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Abstract

The solubility of pristine fullerenes can be enhanced by mixing C60 and C70 due to the associated increase in configurational entropy. This "entropic dissolution" allows the preparation of field-effect transistors with an electron mobility of 1 cm(2) V(-1) s(-1) and polymer solar cells with a highly reproducible power-conversion efficiency of 6%, as well as a thermally stable active layer.