Organic electronic devices and polymers, including photovoltaic cells and diketone-based and diketopyrrolopyrrole-based polymers
US8691931B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2010 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Mar 12, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Polymers which can be used in p-type materials for organic electronic devices and photovoltaic cells. Compounds, monomers, dimers, trimers, and polymers comprising:wherein A1 and A2 each independently comprise a fused ring system comprising at least two fused rings directly covalently linked to the pyrrole rings. Good photovoltaic efficiency and lifetime can be achieved. The R group can provide solubility, environmental stability, and fine tuning of spectroscopic and/or electronic properties. Different polymer microstructures can be prepared which encourage multiple band gaps and broad and strong absorptions. The carbonyl can interact with adjacent thiophene rings to provide backbone with rigidity, induce planarity, and reduce and/or eliminate intramolecular chain twisting defects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.