Oligothiophene-S,S-dioxides as a class of electron-acceptor materials for organic photovoltaics

Oligothiophene-S,S-dioxides are proposed as electron acceptors materials in organic blended photovoltaic devices. Photoinduced charge transfer is demonstrated in blends between a regioregular poly(3-hexylthiophene) and the oligomers, via photoluminescence spectroscopy. The enhanced photovoltaic perf...

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Bibliographic Details
Published in:Applied physics letters 2004-03, Vol.84 (11), p.1901-1903
Main Authors: Camaioni, N., Ridolfi, G., Fattori, V., Favaretto, L., Barbarella, G.
Format: Article
Language:English
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Summary:Oligothiophene-S,S-dioxides are proposed as electron acceptors materials in organic blended photovoltaic devices. Photoinduced charge transfer is demonstrated in blends between a regioregular poly(3-hexylthiophene) and the oligomers, via photoluminescence spectroscopy. The enhanced photovoltaic performance exhibited by the blended cells, with respect to that of pristine devices in which the polymer is the active layer, represents further evidence for exciton dissociation. An increase of the power conversion efficiency up to sixty-fold is achieved by blending the polymer with the oligothiophene-S,S-dioxides.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1682681