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Quantitative cascade energy transfer in semiconductor thin films

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Abstract

In this contribution we report the photophysical study of three organic blend systems comprising [60]-PCBM along with different combinations of five extended semiconducting arylacetylenes, i.e. p-[(2-{[m,pdidodecyloxyphenyl] ethynyl}-7-fluorenyl)ethynyl]benzonitrile, 4,7-bis(5-{[m,p-bis(hexyloxy)phenyl]-ethynyl}thien-2-yl)-2,1,3-benzothiadiazole, 9,10-bis-[(m,m-bis{[m,m-bis-(hexyloxy)phenyl]ethynyl}-phenyl)ethynyl]-anthracene, pseudo-p-[(10-{[m,p-bis-(hexyloxy)phenyl]ethynyl}-9-anthryl[2.2]paracyclophane, and oligo{2,5-bis(hexyloxy)[1,4- phenylene ethynylene]-alt-[9,10-anthraceneethynylene]}, and one semiconducting arylvinylene, i.e. 9,10-bis-{(E)-[m,p-bis(hexyloxy)phenyl]vinyl}-anthracene, that evidenced an efficient quantitative energy transfer from the hypsochromic to the bathochromic species (the potential efficient charge-donor components), useful to extend the collection of sunlight. An interesting emission enhancement in thin films has been observed only for the arylvinylene derivative.

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Authors and Affiliations

  1. Department of Chemistry, Biology and Biotechnology, and Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), University of Perugia, via Elce di Sotto 8, 06123, Perugia, Italy

    Rebecca Flamini, Assunta Marrocchi & Anna Spalletti

Authors
  1. Rebecca Flamini
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  2. Assunta Marrocchi
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  3. Anna Spalletti
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Correspondence to Assunta Marrocchi or Anna Spalletti.

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Flamini, R., Marrocchi, A. & Spalletti, A. Quantitative cascade energy transfer in semiconductor thin films. Photochem Photobiol Sci 13, 1031–1038 (2014). https://doi.org/10.1039/c4pp00071d

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  • DOI: https://doi.org/10.1039/c4pp00071d

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