Reis, Wieland G. ; Weitz, R. Thomas ; Kettner, Michel ; Kraus, Alexander ; Schwab, Matthias Georg ; Tomović, Željko ; Krupke, Ralph ; Mikhael, Jules (2016)
Highly Efficient and Scalable Separation of Semiconducting Carbon Nanotubes via Weak Field Centrifugation.
In: Scientific Reports, 6
doi: 10.1038/srep26259
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The identification of scalable processes that transfer random mixtures of single-walled carbon nanotubes (SWCNTs) into fractions featuring a high content of semiconducting species is crucial for future application of SWCNTs in high-performance electronics. Herein we demonstrate a highly efficient and simple separation method that relies on selective interactions between tailor-made amphiphilic polymers and semiconducting SWCNTs in the presence of low viscosity separation media. High purity individualized semiconducting SWCNTs or even self-organized semiconducting sheets are separated from an as-produced SWCNT dispersion via a single weak field centrifugation run. Absorption and Raman spectroscopy are applied to verify the high purity of the obtained SWCNTs. Furthermore SWCNT - network field-effect transistors were fabricated, which exhibit high ON/OFF ratios (10^5) and field-effect mobilities (17 cm^2/Vs). In addition to demonstrating the feasibility of high purity separation by a novel low complexity process, our method can be readily transferred to large scale production.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2016 |
| Autor(en): | Reis, Wieland G. ; Weitz, R. Thomas ; Kettner, Michel ; Kraus, Alexander ; Schwab, Matthias Georg ; Tomović, Željko ; Krupke, Ralph ; Mikhael, Jules |
| Art des Eintrags: | Bibliographie |
| Titel: | Highly Efficient and Scalable Separation of Semiconducting Carbon Nanotubes via Weak Field Centrifugation |
| Sprache: | Englisch |
| Publikationsjahr: | 18 Mai 2016 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Scientific Reports |
| Jahrgang/Volume einer Zeitschrift: | 6 |
| DOI: | 10.1038/srep26259 |
| Kurzbeschreibung (Abstract): | The identification of scalable processes that transfer random mixtures of single-walled carbon nanotubes (SWCNTs) into fractions featuring a high content of semiconducting species is crucial for future application of SWCNTs in high-performance electronics. Herein we demonstrate a highly efficient and simple separation method that relies on selective interactions between tailor-made amphiphilic polymers and semiconducting SWCNTs in the presence of low viscosity separation media. High purity individualized semiconducting SWCNTs or even self-organized semiconducting sheets are separated from an as-produced SWCNT dispersion via a single weak field centrifugation run. Absorption and Raman spectroscopy are applied to verify the high purity of the obtained SWCNTs. Furthermore SWCNT - network field-effect transistors were fabricated, which exhibit high ON/OFF ratios (10^5) and field-effect mobilities (17 cm^2/Vs). In addition to demonstrating the feasibility of high purity separation by a novel low complexity process, our method can be readily transferred to large scale production. |
| 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: | 20 Dez 2016 11:45 |
| Letzte Änderung: | 20 Dez 2016 11:45 |
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