P-Type electrically conducting doped polyacetylene film and method of preparing same
AssigneeUniversity Patents, Inc.
InventorsAlan J. Heeger, Alan G. MacDiarmid, Chwan K. Chiang, Hideki Shirakawa
Life of this patent
Estimating the term…
Abstract
Electrically conducting organic polymeric material having a preselected room temperature p-type electrical conductivity which may vary over the entire range characteristic of semiconductor behavior and into the range characteristic of metallic behavior, is prepared by controlled chemical doping of polyacetylene in the form of a polycrystalline film. Exceptionally high room temperature p-type electrical conductivity within the range of from about 0.1 to of the order of 10.sup.3 ohm.sup.-1 cm.sup.-1 is achieved with several electron acceptor dopants, including bromine, iodine, iodine chloride, iodine bromide and arsenic pentafluoride.
Claims13
In a method of selectively modifying the room temperature electrical conductivity of a semiconducting polyacetylene starting material by means of chemically doping said polyacetylene to p-type with a conductivity-increasing amount of an electron acceptor dopant, the improvement consisting of said polyacetylene starting material being in the form of a polycrystalline film, whereby the range of selectivity of the room temperature p-type electrical conductivity of the resulting doped material is broadened to extend over the entire range characteristic of semiconductor behavior and into the range characteristic of metallic behavior.
A p-type electrically conducting polycrystalline film of electron acceptor-doped polyacetylene exhibiting a room temperature electrical conductivity within the range of from about 0.1 to of the order of 10.sup.3 ohm.sup.-1 cm.sup.-1.
Dependencies are inferred from the claim text.