Abstract
Patterning of organic compounds on a nanometer length scale is of great interest for solarapplications: defined control over the donor–acceptor interface will allow design of anoptimized nano-morphology promoting exciton separation and reducing chargerecombination. Herein we present an imprinting technique using anodized alumina oxide(AAO) hard templates as stamps. We show an exact pattern transfer of the AAOstructures into a solution processable hexa-peri-hexabenzocoronene (HBC), a discotic smallmolecule with acrylate moieties which is polymerized in situ. Film fabrication is realized fora variety of nanowire dimensions on square centimeter areas. The fabrication directly onconductive glass support and control over the formation of a dense barrier layer render thisapproach appealing for the fabrication of fully organic nanostructured photovoltaic devices.
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