Method for preparing a conductive polythiophene layer at low temperature
AssigneeAgfa-Gevaert
InventorsTom Cloots, Johan Loccufier, Frank Louwet, Hieronymus Andriessen
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Abstract
A method for producing a polymeric conductive layer on an object comprising the steps of: providing an aqueous composition containing a polythiophene, a polyanion compound and an aprotic compound with a dielectric constant, ε, ≧15, applying said composition to said object forming a layer and drying said layer to form a conductive polymeric layer on said object, characterised in that during said production said object and said layer are kept at a temperature below 100° C. and said conductive polymeric layer has a resistivity of at most 2 kΩ/square.
Claims9
A method for producing a polymeric conductive layer on an object comprising the steps of:
- providing an aqueous composition containing
- a polythiophene,
- a polyanion compound and
- an aprotic compound with a dielectric constant, ε, ≧15;
- applying said composition to said object forming a layer;
- and
- drying said layer to form a conductive polymeric layer on said object,
- wherein said object and said layer are kept at a temperature below 100° C. and said conductive polymeric layer has a resistivity of at most 2 kΩ/square.
A coatable aqueous composition comprising
- a polythiophene,
- a polyanion compound and
- an aprotic compound with dielectric constant, ε, ≧15 selected from the group consisting of sulphones, sulphoxides, organic phosphate esters, organic phosphonates, organic phosphamides, urea, derivatives of urea, and mixtures thereof, wherein said polyanion compound is polystyrene sulfonic acid and said polythiophene has a formula as follows:
- wherein each of R1 and R2 independently represents hydrogen or a C1-4 alkyl group or together represent an optionally substituted C1-4 alkylene group or a cycloalkylene group, an optionally alkyl-substituted methylene group, an optionally C1-12 alkyl- or phenyl-substituted 1,2-ethylene group, a 1,3-propylene group or a 1,2-cyclohexylene group.
Dependencies are inferred from the claim text.