Polymer compositions for vertical channel organic electrochemical transistors and complementary logic circuits
AssigneesNorthwestern University, Flexterra, Inc.
InventorsAntonio F. Facchetti, Tobin J. Marks, Wei Huang, Jianhua Chen, Yu Xia
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Abstract
Photocurable compositions that combine redox-active semiconducting organic polymers with photocurable organic molecules are provided. Upon exposure to radiation, the photocurable compositions form ion-permeable, electrically conductive crosslinked organic films that can be used as conducting channels in n-channel or p-channel organic electrochemical transistors, including vertical organic electrochemical transistors (vOECTs). The vOECTs can be incorporated in complementary electronic circuits.
Claims20
A polymer composition comprising a blend of:
- a redox-active, semiconducting organic polymer;
- and
- a photocurable organic molecule.
A method of forming an ion-permeable, electrically conductive crosslinked organic film, the method comprising:
- forming a coating of a composition on a substrate, the composition comprising a redox-active semiconducting organic polymer and photocurable organic molecules dissolved in a solvent or a solvent mixture on a substrate;
- and
- exposing at least a portion of the coating to radiation that induces crosslinking between the photocurable organic molecules to form a crosslinked organic polymer.
A vertical organic electrochemical transistor comprising:
- a source;
- a drain;
- an ion-permeable semiconducting channel comprising an organic film in electrical communication with the source and the drain, the organic film comprising:
- a redox-active, semiconducting organic polymer blended with a crosslinked organic polymer that is functionalized with a radiation-absorbing functional group;
- an electrolyte in contact with the ion-permeable semiconducting channel;
- and
- a gate in contact with the organic electrolyte.
A complementary circuit comprising:
- a first vertical organic electrochemical transistor electrically connected to a complementary channel vertical organic electrochemical transistor, wherein the first vertical organic electrochemical transistor comprises:
- a source;
- a drain;
- an ion-permeable semiconducting channel comprising an organic film in electrical communication with the source and the drain, the organic film comprising:
- a redox-active, semiconducting organic polymer blended with a crosslinked organic polymer that is functionalized with a radiation-absorbing functional group;
- an electrolyte in contact with the ion-permeable semiconducting channel;
- and
- a gate in contact with the organic electrolyte.
A method of making a vertical organic electrochemical transistor, the method comprising:
- forming a first electrode;
- applying a composition on a surface of the first electrode, the
- composition comprising a blend of a redox-active, semiconducting organic polymer and a photocurable organic molecule;
- exposing at least a portion of the composition to radiation that induces crosslinking the photocurable organic molecules to form a crosslinked organic film;
- forming a second electrode on a surface of the crosslinked organic film;
- placing an electrolyte in contact with the crosslinked organic film;
- and
- placing a gate in contact with the electrolyte.
Dependencies are inferred from the claim text.