Electroluminescence of a polythiophene molecular wire suspended between a metallic surface and the tip of a scanning tunneling microscope

Gaël Reecht, Fabrice Scheurer, Virginie Speisser, Yannick J. Dappe, Fabrice Mathevet, Guillaume Schull

Research output: Contribution to journalArticle

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Abstract

The electroluminescence of a polythiophene wire suspended between a metallic surface and the tip of a scanning tunneling microscope is reported. Under positive sample voltage, the spectral and voltage dependencies of the emitted light are consistent with the fluorescence of the wire junction mediated by localized plasmons. This emission is strongly attenuated for the opposite polarity. Both emission mechanism and polarity dependence are similar to what occurs in organic light emitting diodes (OLED) but at the level of a single molecular wire.

Original languageEnglish
Article number047403
JournalPhysical Review Letters
Volume112
Issue number4
DOIs
Publication statusPublished - Jan 28 2014

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electroluminescence
microscopes
wire
scanning
polarity
electric potential
plasmons
light emitting diodes
fluorescence

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Electroluminescence of a polythiophene molecular wire suspended between a metallic surface and the tip of a scanning tunneling microscope. / Reecht, Gaël; Scheurer, Fabrice; Speisser, Virginie; Dappe, Yannick J.; Mathevet, Fabrice; Schull, Guillaume.

In: Physical Review Letters, Vol. 112, No. 4, 047403, 28.01.2014.

Research output: Contribution to journalArticle

Reecht, Gaël ; Scheurer, Fabrice ; Speisser, Virginie ; Dappe, Yannick J. ; Mathevet, Fabrice ; Schull, Guillaume. / Electroluminescence of a polythiophene molecular wire suspended between a metallic surface and the tip of a scanning tunneling microscope. In: Physical Review Letters. 2014 ; Vol. 112, No. 4.
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