Composition and applications of a multi-component benzo[1,2-B:4,5-B] dithiophene-difluorothienothiophene randomly substituted polymers for organic solar cells
US9663604B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | May 27, 2015 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | May 27, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/549
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polymer having two different sets of repeat units consisting essentially of:In this polymer, R1, R2, R3 and R4 can be independently selected from the group consisting of alkyl group, alkoxy group, aryl groups and combinations thereof. Also the combination of R1, R2, R3 and R4 are not all identical and n and o are greater than 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.