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US 9,960,355 B2Granted
Organic polymer semiconductors with increased interdomain connectivity and mobility
AssigneePalo Alto Research Center Incorporated
InventorJohn E. Northrup
Life of this patent
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Abstract
An electronic device, including an organic semiconductor, the organic semiconductor having a first polymer having a first molecular weight and a first length, and a second polymer having a second molecular weight and a second length, wherein the second length is longer than the first length.
Claims9
An electronic device, comprising an organic semiconductor layer being a mixture of two polymers, containing ordered domains separated by less ordered boundary regions, the organic semiconductor comprising:
- a first conducting polymer consisting of a number N1 of a first monomer, the first conducting polymer having a first molecular weight equal to N1 times a molecular weight of the first monomer and a first length;
- the first polymer forming ordered domains of higher electrical conductivity separated by domain boundary regions of lower conductivity;
- and
- a second conducting polymer added to the first polymer to form a conducting link between at least two ordered domains formed of the first polymer and to increase the overall conductivity of the film, the second polymer consisting of a number N2 of a second monomer different from the first monomer, the second polymer having a second molecular weight equal to N2 times a molecular weight of the second monomer and a second length, wherein the second length is selected to be longer than the first length and N2 is greater than N1.
1 more element
An electronic device, comprising:
- an organic semiconductor formed from a mixture of two different conducting polymers;
- the mixture of conducting polymers having a distribution of monomer numbers;
- the distribution exhibiting one peak centered at N1 first monomers and a second peak centered at N2 second monomers different from the first monomer, wherein N2>N1, and wherein the width of the peak at N1 is W1 and the width of the peak at N2 is W2, the widths W1 and W2 being such that W1 and W2 are each less than the distance between the peaks centered at N2 and N1, according to FIG. 8.
Dependencies are inferred from the claim text.