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Measurement of molecular motion in organic semiconductors by thermal diffuse electron scattering
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Eggeman, Alexander S., Illig, Steffen, Troisi, Alessandro, Sirringhaus, Henning and Midgley, Paul A. (2013) Measurement of molecular motion in organic semiconductors by thermal diffuse electron scattering. Nature Materials, Volume 12 (Number 11). pp. 1045-1049. doi:10.1038/nmat3710 ISSN 1476-1122.
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Official URL: http://dx.doi.org/10.1038/nmat3710
Abstract
Many of the remarkable electrical and optical properties of organic semiconductors are governed by the interaction of electronic excitations with intra- and intermolecular vibrational modes. However, in specific systems this interaction is not understood in detail at a molecular level and this has been due, at least in part, to the lack of easy-to-use and widely available experimental probes of the structural dynamics. Here we demonstrate that thermal diffuse scattering in electron diffraction patterns from organic semiconductors, such as 6,13-bistriisopropyl-silylethynyl pentacene, allows the dominant lattice vibrational modes to be probed directly. The amplitude and direction of the dominant molecular motions were determined by comparison of the diffuse scattering with simulations and molecular dynamics calculations. Our widely applicable approach enables a much deeper understanding of the structural dynamics in a broad range of organic semiconductors.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||
Journal or Publication Title: | Nature Materials | ||||
Publisher: | Nature Publishing Group | ||||
ISSN: | 1476-1122 | ||||
Official Date: | 28 July 2013 | ||||
Dates: |
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Volume: | Volume 12 | ||||
Number: | Number 11 | ||||
Page Range: | pp. 1045-1049 | ||||
DOI: | 10.1038/nmat3710 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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