The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 08, 2014
Filed:
Sep. 01, 2010
Christopher T. Brown, Pittsburgh, PA (US);
Christophe René Gaston Grenier, Pittsburgh, PA (US);
Chad Landis, Oakmont, PA (US);
Elena E. Sheina, Pittsburgh, PA (US);
Ting Xu, Pittsburgh, PA (US);
Christopher T. Brown, Pittsburgh, PA (US);
Christophe René Gaston Grenier, Pittsburgh, PA (US);
Chad Landis, Oakmont, PA (US);
Elena E. Sheina, Pittsburgh, PA (US);
Ting Xu, Pittsburgh, PA (US);
Plextronics, Inc., Pittsburgh, PA (US);
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.