Fig. 1: Material processing.
From: A high-conductivity n-type polymeric ink for printed electronics
a Schematics of the film structure and chemical structure of p-type PEDOT:PSS. b Schematics of the film structure and chemical structures of BBL, PEIlin, and PEIbra polymers. c Processing steps to obtain the BBL:PEI ink and its deposition through spray-coating. BBL powder is dissolved in MSA, followed by dispersion in ethanol through a solvent-exchange method, which results in the formation of BBL nanoparticles, and finally mixing with PEI to form the final BBL:PEI ink; BBL:PEI ink can be spray-coated in air, followed by thermal annealing, to form the highly conducting n-type film. d Health exposure limits of the solvent used for the BBL:PEI ink and comparison with other solvents typically used to process n-type conducting polymers (Tol, toluene; CF, chloroform; TCE, trichloroethylene; CB, chlorobenzene; and ODCB, 1,2-dichlorobenzene). Data from the US National Institute for Occupational Safety and Health (NIOSH, see Supplementary Table 2).
