Conductivity in organic semiconductors hybridized with the vacuum field

E. Orgiu, J. George, J. A. Hutchison, E. Devaux, J. F. Dayen, B. Doudin, F. Stellacci, C. Genet, J. Schachenmayer, C. Genes, G. Pupillo, P. Samorì, T. W. Ebbesen

Research output: Contribution to journalArticle

162 Citations (Scopus)

Abstract

Much effort over the past decades has been focused on improving carrier mobility in organic thin-film transistors by optimizing the organization of the material or the device architecture. Here we take a different path to solving this problem, by injecting carriers into states that are hybridized to the vacuum electromagnetic field. To test this idea, organic semiconductors were strongly coupled to plasmonic modes to form coherent states that can extend over as many as 10 5 molecules and should thereby favour conductivity. Experiments show that indeed the current does increase by an order of magnitude at resonance in the coupled state, reflecting mostly a change in field-effect mobility. A theoretical quantum model confirms the delocalization of the wavefunctions of the hybridized states and its effect on the conductivity. Our findings illustrate the potential of engineering the vacuum electromagnetic environment to modify and to improve properties of materials.

Original languageEnglish
Pages (from-to)1123-1129
Number of pages7
JournalNature Materials
Volume14
Issue number11
DOIs
Publication statusPublished - Nov 1 2015

Fingerprint

Semiconducting organic compounds
organic semiconductors
Vacuum
conductivity
vacuum
problem solving
Carrier mobility
Thin film transistors
Wave functions
carrier mobility
Electromagnetic fields
electromagnetic fields
transistors
engineering
electromagnetism
Molecules
thin films
molecules
Experiments

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Condensed Matter Physics
  • Materials Science(all)
  • Chemistry(all)

Cite this

Orgiu, E., George, J., Hutchison, J. A., Devaux, E., Dayen, J. F., Doudin, B., ... Ebbesen, T. W. (2015). Conductivity in organic semiconductors hybridized with the vacuum field. Nature Materials, 14(11), 1123-1129. https://doi.org/10.1038/nmat4392

Conductivity in organic semiconductors hybridized with the vacuum field. / Orgiu, E.; George, J.; Hutchison, J. A.; Devaux, E.; Dayen, J. F.; Doudin, B.; Stellacci, F.; Genet, C.; Schachenmayer, J.; Genes, C.; Pupillo, G.; Samorì, P.; Ebbesen, T. W.

In: Nature Materials, Vol. 14, No. 11, 01.11.2015, p. 1123-1129.

Research output: Contribution to journalArticle

Orgiu, E, George, J, Hutchison, JA, Devaux, E, Dayen, JF, Doudin, B, Stellacci, F, Genet, C, Schachenmayer, J, Genes, C, Pupillo, G, Samorì, P & Ebbesen, TW 2015, 'Conductivity in organic semiconductors hybridized with the vacuum field', Nature Materials, vol. 14, no. 11, pp. 1123-1129. https://doi.org/10.1038/nmat4392
Orgiu E, George J, Hutchison JA, Devaux E, Dayen JF, Doudin B et al. Conductivity in organic semiconductors hybridized with the vacuum field. Nature Materials. 2015 Nov 1;14(11):1123-1129. https://doi.org/10.1038/nmat4392
Orgiu, E. ; George, J. ; Hutchison, J. A. ; Devaux, E. ; Dayen, J. F. ; Doudin, B. ; Stellacci, F. ; Genet, C. ; Schachenmayer, J. ; Genes, C. ; Pupillo, G. ; Samorì, P. ; Ebbesen, T. W. / Conductivity in organic semiconductors hybridized with the vacuum field. In: Nature Materials. 2015 ; Vol. 14, No. 11. pp. 1123-1129.
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