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Jodi M. Szarko, Brian S. Rolczynski, Sylvia J. Lou, Tao Xu, Joseph Strzalka, Tobin J. Marks, Luping Yu and Lin X. Chen Photovoltaic Function and Exciton/Charge Transfer Dynamics in a Highly Efficient Semiconducting Copolymer Advanced Functional Materials 24

Version of Record online: 9 JUL 2013 | DOI: 10.1002/adfm.201301820

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The excitonic dissociation pathways in the high-performance, low bandgap “in-chain donor-acceptor” polymer PTB7 are investigated by transient absorption spectroscopy and grazing incidence spectroscopy. The effects of the amplitude and kinetics of inter- and intramolecular charge transfer state spectra, along with a detailed morphology analysis, are investigated and compared to those of conventional semiconducting homopolymers.

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