Flexible organic photovoltaics using conducting polymer electrodes

Abstract

Single heterojunction, small-molecule organic photovoltaic devices (OPVs) have been prepared on fully flexible thermoplastic substrates using prepatterned conducting polymer electrodes $(\sim 450\Omega ∕◻)$ . OPVs were fabricated via sequential vacuum vapor deposition of layers of the organic electron donating/hole transporting material: $N,N^{\prime }\text{-}\left(\alpha \text{-naphthyl}\right)\text{-}N,N^{\prime }\text{-diphenyl-}1,1^{\prime }\text{-}\text{biphenyl-}4,4^{\prime }\text{-diamine}$ and the electron accepting/transporting material: ${\mathrm{C}}_{60}$ . The resulting photovoltaic cells exhibit white-light power conversion efficiencies of 1% (AM1.5, $97\mathrm{mW}∕{\mathrm{cm}}^2$ ), virtually identical to those fabricated on prepatterned tin-doped indium oxide/glass substrates.