Poly[(9,9-bis(3￠-(N,N-diMethylaMino)propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene)

PFN is a conjugated polyelectrolyte used as an electron-interface in OPV devices to improve extraction efficiencies. Currently producing power conversion efficiencies of up to 7.1% at Ossila with further increases expected from additional optimisation and up to 9.2% reported in the literature [1-3].

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