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Photo-induced intramolecular charge transfer in an ambipolar field-effect transistor based on a p-conjugated donor–acceptor dyad

AuthorsPfattner, Raphael ; Pavlica, Egon; Jaggi, Michael; Liu, Shi-Xia; Decurtins, Silvio; Bratina, Gvido; Veciana, Jaume ; Mas Torrent, Marta ; Rovira, Concepció
Issue Date7-Jul-2013
PublisherRoyal Society of Chemistry (UK)
CitationJournal of Materials Chemistry. C, Materials for optical and electronic devices 1(25) : 3985-3988 (2013)
AbstractA p-conjugated tetrathiafulvalene-fused perylenediimide (TTF-PDI) molecular dyad is successfully used as a solution-processed active material for light sensitive ambipolar field-effect transistors with balanced hole and electron mobilities. The photo-response of the TTF-PDI dyad resembles its absorption profile. Wavelength-dependent photoconductivity measurements reveal an important photo-response at an energy corresponding to a PDI-localized electronic p–p* transition and also a more moderate effect due to an intramolecular charge transfer from the HOMO localized on the TTF unit to the LUMO localized on the PDI moiety. This work clearly elucidates the interplay between intra- and intermolecular electronic processes in organic devices.
DescriptionArticle: 4 pages, 3 figures; Supplementary information: 7 pages, 7 figures
Publisher version (URL)http://dx.doi.org/10.1039/c3tc30442f
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