Fig. 1. FTIR spectra of PEDOT:PSS at the EDOT : PSS weight ratio of 1 : 11 and EDOT : Na2S2O8 mole ratio of 1 : 2 with various surfactant types: (a) no surfactant, (b) CTAB (2.5CMC), (c) SDS (2.5CMC), and (d) Triton X-100 (2.5CMC).
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