Enhancing performance characteristics of organic semiconducting films by improved solution processing
AssigneeThe Regents of the University of California
InventorsGuillermo C. Bazan, Alan J. Heeger, Daniel Moses, Jeffrey Peet
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Abstract
Improved processing methods for enhanced properties of conjugated polymer films are disclosed, as well as the enhanced conjugated polymer films produced thereby. Addition of low molecular weight alkyl-containing molecules to solutions used to form conjugated polymer films leads to improved photoconductivity and improvements in other electronic properties. The enhanced conjugated polymer films can be used in a variety of electronic devices, such as solar cells and photodiodes.
Claims30
A method of forming an organic semiconductor film, comprising the steps of adding an amount of one or more low molecular weight molecules to a solution of one or more organic semiconductors, and forming the organic semiconductor film from the solution, wherein the low molecular weight molecules are selected from the group consisting of C4-C20 alkanes substituted with one or more substituents selected from aldehyde, dioxo, hydroxy, thiol, thioalkyl, amine, amide, thioether, and epoxide groups, with the proviso that if a thiol or hydroxy group substituent is present, at least one independently chosen additional substituent must also be present;
- wherein the organic semiconductor film comprises a conjugated polymer film electron donor and an organic electron acceptor, or the organic semiconductor film comprises a conjugated polymer film electron acceptor and an organic electron donor.
A method of forming an organic semiconductor film, comprising the steps of adding an amount of one or more low molecular weight molecules to a solution of one or more organic semiconductors, and forming the organic semiconductor film from the solution, wherein the low molecular weight molecules are selected from the group consisting of C4-C20 alkanes substituted with at least two substituents selected from aldehyde, dioxo, hydroxy, thiol, thioalkyl, amine, amide, thioether, and epoxide groups.
Dependencies are inferred from the claim text.