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We describe the conditions for optimal formation of laser-induced periodic surface structures (LIPSS) over poly(3-hexylthiophene) (P3HT) spin-coated films. Optimal LIPSS on P3HT are observed within a particular range of thicknesses and laser fluences. These conditions can be translated to the photovoltaic blend formed by the 1:1 mixture of P3HT and [6,6]-phenyl C 71 -butyric acid methyl ester (PC 71 BM) when deposited on an indium tin oxide (ITO) electrode coated with (poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS). Solar cells formed by using either a bilayer of P3HT structured by LIPSS covered by PC 71 BM or a bulk heterojunction with a P3HT:PC 71 BM blend structured by LIPSS exhibit generation of electrical photocurrent under light illumination. These results suggest that LIPSS could be a compatible technology with organic photovoltaic devices.

Laser-Induced Periodic Surface Structures on P3HT and on Its Photovoltaic Blend with PC71BM

Laser-Induced Periodic Surface Structures on P3HT and on Its Photovoltaic Blend with PC₇₁BM