GISANS study on conducting polymer infiltration in porous cellulose thin films.
We intend to follow a novel route for fabricating cellulose-functional polymer nanocomposites ("functional nanopaper") by spray coating. Cellulose nanofibrils (CNF) serve as high strength building blocks for porous thin film templates. poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) as a functional polymer is commonly used as active layer material in organic solar cells. We aim to investigate the filling and penetration of deuterated PEDOT:PSS using spray coating into porous CNF films, also prepared by spray coating. Depending of the surface charge of the CNFs, a change in CNF nanostructure and porosity of such thin films is expected, which in turn will strongly influence the filling by the functional polymer. We plan to employ GISANS, as it offers the unique possibility of elucidating the porosity, nanostructure and three-dimensional morphology of the thin film, yet at the same time to retrieve the filling by the deuterated PEDOT:PSS due to contrast variation in the nanocomposite. Ultimately the goal is to establish a fully sprayed organic solar cells based on resource saving and renewable materials, making use of their flexibility and mechanical stability.
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Stephan V. Roth; Calvin J. Brett; Lucas Philipp Kreuzer; MANSSON MARTIN; MUELLER BUSCHBAUM Peter; PORCAR Lionel; L. Daniel Söderberg; Tobias Widmann and Shun Yu. (2018). GISANS study on conducting polymer infiltration in porous cellulose thin films.. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-11-1885
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