Controlling the Solidification of Organic Photovoltaic Blends with Nucleating Agents
AuthorsNekuda Malik, Jennifer A.
Treat, Neil D.
Hawker, Craig J.
Chabinyc, Michael L.
KAUST DepartmentPhysical Sciences and Engineering (PSE) Division
Materials Science and Engineering Program
KAUST Solar Center (KSC)
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AbstractBlending fullerenes with a donor polymer for the fabrication of organic solar cells often leads to at least partial vitrification of one, if not both, components. For prototypical poly(3-hexylthiophene):fullerene blend, we show that the addition of a commercial nucleating agent, di(3,4-dimethyl benzylidene)sorbitol, to such binary blends accelerates the crystallization of the donor, resulting in an increase in its degree of crystallinity in as-cast structures. This allows manipulation of the extent of intermixing/ phase separation of the donor and acceptor directly from solution, offering a tool to improve device characteristics such as power conversion efficiency.
CitationControlling the Solidification of Organic Photovoltaic Blends with Nucleating Agents. Organic Photonics and Photovoltaics. Volume 2, Issue 1, ISSN (Online) 2299-3177, DOI: 10.2478/oph-2014-0006, November 2014
PublisherWalter de Gruyter GmbH
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