Theory of interfacial charge-transfer complex photophysics inπ-conjugated polymer-fullerene blends
نویسندگان
چکیده
منابع مشابه
Association function of conjugated polymer charge-transfer complex.
The donor-acceptor ground-state charge-transfer complex (CTC) formed in solution between a conjugated polymer, poly[methoxy-5-(2'-ethylhexyloxy)-1,4-phenylene-vinylene] (MEH-PPV), and a low-molecular-weight organic acceptor, 2,4,7-trinitrofluorenone (TNF), is studied by optical absorption and Raman spectroscopy. The CTC absorption as a function of TNF content shows a threshold increase that is ...
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Jan Behrends,1,* Andreas Sperlich,2 Alexander Schnegg,3 Till Biskup,1,† Christian Teutloff,1 Klaus Lips,3 Vladimir Dyakonov,2,4 and Robert Bittl1 1Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany 2Experimental Physics VI, Julius-Maximilians Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany 3Institut für Silizium-Photovoltaik, Helmholtz-Zentrum Berli...
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Blends of poly(3-hexylthiophene) (P3HT) and the bis-adduct of [6,6]-phenyl-C(61)-butyric acid methyl ester (bisPCBM) show enhanced performances in bulk-heterojunction solar cells compared to P3HT:PCBM thin films due to their higher open-circuit voltage. However, it is not clear whether the decrease of the short-circuit current observed in P3HT-bisPCBM blends originates from the 100 mV reduction...
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We report our results on the influence of the dipole moment of small molecules anchored to the surface of CdSe nanocrystals, over the interfacial charge recombination dynamics in CdSe/P3HT (P3HT : poly-3-hexylthiophene). The polarizability of the CdSe/P3HT interface is key to achieving efficient charge separation and slow back electron transfer, two of the most important processes to boost the ...
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Hybrid nanocrystal-polymer systems are promising candidates for photovoltaic applications, but the processes controlling charge generation are poorly understood. Here, we disentangle the energy- and charge-transfer processes occurring in a model system based on blends of cadmium selenide nanocrystals (CdSe-NC) with poly[2-methoxy-5-(3',7'-dimethyloctyloxy)-1,4-phenylene vinylene] (MDMO-PPV) usi...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2010
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.81.085407