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US 9,431,612 B2Granted
Methods for tailoring electrode work function using interfacial modifiers for use in organic electronics
AssigneesThe Governors of the University of Alberta, National Research Council of Canada
InventorsBrian Worfolk, Qun Chen, Jillian Buriak
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Abstract
The present invention is directed to methods for tailoring the work function of electrodes in organic electronics using interfacial modifiers comprising functionalized semiconducting polymers and/or small molecules.
Claims5
A method of tailoring the work function of an electrode to a desired work function value for use in an organic photovoltaic device comprising the steps of:
- a. selecting a small molecule for an electrode based on known work function values obtained from a library of established work function values for electrode/small molecule pairs;
- b. coating an electrode with a solution containing the selected small molecule and rinsing to form a half bilayer;
- c. measuring the work function of the half bilayer to obtain a work function value;
- d. comparing the work function value to the desired work function value;
- e. coating the half bilayer with PEDOT:PSS to form a bilayer;
- f. measuring the work function of the bilayer to obtain a bilayer work function value;
- and
- g. repeating steps a-f using a different small molecule in each successive cycle of steps a-f until the desired work function value is obtained.
5 more elements
Dependencies are inferred from the claim text.