Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Polymeric material with metal-like conductivity for next generation organic electronic devices
AU - Fabretto, Manrico V.
AU - Evans, Drew R.
AU - Mueller, Michael
AU - Zuber, Kamil
AU - Hojati-Talemi, Pejman
AU - Short, Rob D.
AU - Wallace, Gordon G.
AU - Murphy, Peter J.
PY - 2012/10/23
Y1 - 2012/10/23
N2 - The reduced pressure synthesis of poly(3,4-ethylenedioxythiophene) (PEDOT) with sheet-like morphology has been achieved with the introduction of an amphiphilic triblock copolymer into the oxidant thin film. Addition of the copolymer not only results in an oxidant thin film which remains liquid-like under reduced pressure but also induces structured growth during film formation. PEDOT films were polymerized using the vacuum vapor phase polymerization (VPP) technique, in which we show that maintaining a liquid-like state for the oxidant is essential. The resulting conductivity is equivalent to commercially available indium tin oxide (ITO) with concomitant optical transmission values. PEDOT films can be produced with a variety of thicknesses across a range of substrate materials from plastics to metals to ceramics, with sheet resistances down to 45 Omega/square (ca. 3400 S.cm(-1)), and transparency in the visible spectrum of >80% at 65 nm thickness. This compares favorably to ITO and its currently touted replacements.
AB - The reduced pressure synthesis of poly(3,4-ethylenedioxythiophene) (PEDOT) with sheet-like morphology has been achieved with the introduction of an amphiphilic triblock copolymer into the oxidant thin film. Addition of the copolymer not only results in an oxidant thin film which remains liquid-like under reduced pressure but also induces structured growth during film formation. PEDOT films were polymerized using the vacuum vapor phase polymerization (VPP) technique, in which we show that maintaining a liquid-like state for the oxidant is essential. The resulting conductivity is equivalent to commercially available indium tin oxide (ITO) with concomitant optical transmission values. PEDOT films can be produced with a variety of thicknesses across a range of substrate materials from plastics to metals to ceramics, with sheet resistances down to 45 Omega/square (ca. 3400 S.cm(-1)), and transparency in the visible spectrum of >80% at 65 nm thickness. This compares favorably to ITO and its currently touted replacements.
KW - vapor phase polymerization
KW - PEDOT
KW - high conductivity
KW - organic electronics
KW - VAPOR-PHASE POLYMERIZATION
KW - ELECTRICAL-CONDUCTIVITY
KW - THIN-FILMS
KW - POLY(3,4-ETHYLENEDIOXYTHIOPHENE)
KW - TRANSPARENT
KW - CRYSTALLINE
KW - 3,4-ETHYLENEDIOXYTHIOPHENE
KW - COPOLYMER
KW - OXIDANT
U2 - 10.1021/cm302899v
DO - 10.1021/cm302899v
M3 - Journal article
VL - 24
SP - 3998
EP - 4003
JO - Chemistry of Materials
JF - Chemistry of Materials
SN - 0897-4756
IS - 20
ER -