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Process for patterning conductive polyaniline films

  • US 6,045,977 A
  • Filed: 02/19/1998
  • Issued: 04/04/2000
  • Est. Priority Date: 02/19/1998
  • Status: Expired due to Term
First Claim
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1. A method for fabricating a device, comprising the steps of:

  • applying a solution which combines a mixture of polyaniline and an additive, dissolved in a solvent on a substrate, wherein the polyaniline has the structure ##STR1## wherein 0≦

    x≦

    1, wherein R is selected from the group consisting of an alkyl, and alkyl sulfonate, and an aryl, and wherein the additive dissociates and forms a polyaniline salt;

    evaporating the solvent to form a polyaniline salt containing layer on the substrate, wherein the polyaniline salt containing layer has a conductivity greater than about 10-2 S/cm and wherein the polyaniline salt containing layer has a thickness less than about 10 microns; and

    delineating at least one region in the polyaniline salt containing layer wherein the at least one region has a conductivity less than about 10-6 S/cm.

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