Fabrication and Photovoltaic Properties of Organic Thin-film Solar Cells Containing Electrodeposited Poly(3,4-ethylenedioxythiophene) Doped with Different Anions/poly(2,2′-bithiophene) Hierarchical Thin-films (Supporting Information)

A series of organic thin-film solar cells using electrodeposited polythiophene films were fabricated and characterized. The cells consisted of an indium-tin oxide transparent electrode/electrodeposited poly(3,4-ethylenedioxythiophene) doped with different anions as a hole transport layer/electrodeposited poly(2,2′-bithiophene) film as a photoexciting p-type semiconductor layer/[6,6]-phenyl-C₆₁-butyric acid methyl ester as an n-type semiconductor layer/aluminum as a top electrode, were fabricated. Obtained solar cells were characterized and photoelectric properties were evaluated. These organic thin-film solar cells generated photovoltages and photocurrents. The photovoltaic efficiency was varied depending on the structure of dopant anions, which seems to be correlated with the surface morphology of each poly(3,4-ethylenedioxythiophene)-dopant anion.