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- Tehrani, Payman, 1977-, et al.
(author)
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Patterning polythiophene films using electrochemical over-oxidation
- 2005
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In: Smart materials and structures. - : IOP Elctronic Journals. - 0964-1726 .- 1361-665X. ; 14, s. N21-N25
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Journal article (peer-reviewed)abstract
- Over-oxidative degradation of polythiophenes, which breaks the conjugation and destroys the electronic conductivity of the polymer, is well documented as a liability in these materials. We use this 'weakness', via controlled electrochemical over-oxidation, in a novel subtractive patterning technique compatible with high-speed reel-to-reel printing technology. We demonstrate the use of electrochemical over-oxidation to pattern PEDOT:PSS films via an x–y plotter, silk-screen and high-resolution photolithographic techniques, resulting in patterning down to a resolution of 2 µm and a conduction contrast between unpatterned and patterned areas of up to 108.
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