Pfeiffer, Martin H. P. ; Stürzl, Ninette ; Marquardt, Christoph W. ; Engel, Michael ; Dehm, Simone ; Hennrich, Frank ; Kappes, Manfred M. ; Lemmer, Uli ; Krupke, Ralph (2011)
Electroluminescence from chirality-sorted (9,7)-semiconducting carbon nanotube devices.
In: Optics Express, 19 (S6)
doi: 10.1364/OE.19.0A1184
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We have measured the electroluminescence and photoluminescence of (9,7)-semiconducting carbon nanotube devices and demonstrate that the electroluminescence wavelength is determined by the nanotube’s chiral index (n,m). The devices were fabricated on Si3N4-membranes by dielectrophoretic assembly of tubes from monochiral dispersion. Electrically driven (9,7)-devices exhibit a single Lorentzian-shaped emission peak at 825 nm in the visible part of the spectrum. The emission could be assigned to the excitonic E22 interband-transition by comparison of the electroluminescence spectra with corresponding photoluminescence excitation maps. We show a linear dependence of the EL peak width on the electrical current, and provide evidence for the inertness of Si3N4 surfaces with respect to the nanotubes optical properties.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2011 |
| Autor(en): | Pfeiffer, Martin H. P. ; Stürzl, Ninette ; Marquardt, Christoph W. ; Engel, Michael ; Dehm, Simone ; Hennrich, Frank ; Kappes, Manfred M. ; Lemmer, Uli ; Krupke, Ralph |
| Art des Eintrags: | Bibliographie |
| Titel: | Electroluminescence from chirality-sorted (9,7)-semiconducting carbon nanotube devices |
| Sprache: | Englisch |
| Publikationsjahr: | 22 September 2011 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Optics Express |
| Jahrgang/Volume einer Zeitschrift: | 19 |
| (Heft-)Nummer: | S6 |
| DOI: | 10.1364/OE.19.0A1184 |
| Kurzbeschreibung (Abstract): | We have measured the electroluminescence and photoluminescence of (9,7)-semiconducting carbon nanotube devices and demonstrate that the electroluminescence wavelength is determined by the nanotube’s chiral index (n,m). The devices were fabricated on Si3N4-membranes by dielectrophoretic assembly of tubes from monochiral dispersion. Electrically driven (9,7)-devices exhibit a single Lorentzian-shaped emission peak at 825 nm in the visible part of the spectrum. The emission could be assigned to the excitonic E22 interband-transition by comparison of the electroluminescence spectra with corresponding photoluminescence excitation maps. We show a linear dependence of the EL peak width on the electrical current, and provide evidence for the inertness of Si3N4 surfaces with respect to the nanotubes optical properties. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Molekulare Nanostrukturen 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 08 Nov 2011 10:31 |
| Letzte Änderung: | 05 Mär 2013 09:55 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum