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:
Aug. 25, 2020
Filed:
Dec. 17, 2015
The Trustees of Columbia University IN the City of New York, New York, NY (US);
Brookhaven Science Associates, Llc, Upton, NY (US);
Luis Miguel Campos, Brooklyn, NY (US);
Matthew Y. Sfeir, Bethpage, NY (US);
Samuel Nathan Sanders, New York, NY (US);
Elango Kumarasamy, New York, NY (US);
Andrew Brian Pun, New York, NY (US);
Michael Louis Steigerwald, Martinsville, NJ (US);
The Trustees of Columbia University in the City of New York, New York, NY (US);
Bookhaven Science Associates, LLC, Upton, NY (US);
Abstract
The present invention provides soluble, stable singlet fission (SF) compounds, compositions, materials, methods of their use, and methods for their preparation that provide efficient intramolecular singlet fission (iSF) and multiple excitons. The SF compound may be a dimer, an oligomer, or a polymer of polyoligoacenes, where for example, the compound achieves a triplet yield reaching about 200% per absorbed photon. In this system, SF does not depend on intermolecular inter-actions. Instead, SF is an intrinsic property of the molecule and therefore occurs independent of intermolecular interactions. Singlet fission has the potential to significantly improve the photocurrent in single junction solar cells and thus raise the Shockley-Queisser power conversion efficiency limit from about 33% to about 46% or greater. Quantitative SF yield at room temperature has only been observed in crystalline solids or aggregates of higher acenes.