Picht, Oliver ; Müller, Sven ; Alber, Ina ; Rauber, Markus ; Lensch-Falk, Jessica ; Medlin, Douglas L. ; Neumann, Reinhard ; Toimil-Molares, Maria Eugenia (2012)
Tuning the geometrical and crystallographic characteristics of Bi2Te3 nanowires by electrodeposition in ion-track membranes.
In: Journal of Physical Chemistry C, 116 (9)
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We report the fabrication of Bi2Te3 nanowires with diameters as small as 15 nm, which is comparable to the size theoretically estimated for the onset of improvement of the thermoelectric figure of merit ZT by quantum-size effects. The versatility of the template-assisted growth, combining self-prepared ion-track etched membranes and electrochemical deposition, has been employed to synthesize Bi2Te3 nanowires with controlled diameters in 10, 30, and 60 µm thick membranes and with large aspect ratios (length over diameter) of up to 1000. SEM, HRTEM, and XRD investigations reveal how morphology, surface roughness, and crystalline orientation of the Bi2Te3 nanowires depend on deposition potential, temperature, and channel diameter.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2012 |
| Autor(en): | Picht, Oliver ; Müller, Sven ; Alber, Ina ; Rauber, Markus ; Lensch-Falk, Jessica ; Medlin, Douglas L. ; Neumann, Reinhard ; Toimil-Molares, Maria Eugenia |
| Art des Eintrags: | Bibliographie |
| Titel: | Tuning the geometrical and crystallographic characteristics of Bi2Te3 nanowires by electrodeposition in ion-track membranes |
| Sprache: | Englisch |
| Publikationsjahr: | 8 März 2012 |
| Verlag: | ACS Publications |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Physical Chemistry C |
| Jahrgang/Volume einer Zeitschrift: | 116 |
| (Heft-)Nummer: | 9 |
| URL / URN: | http://dx.doi.org/10.1021/jp210491g |
| Kurzbeschreibung (Abstract): | We report the fabrication of Bi2Te3 nanowires with diameters as small as 15 nm, which is comparable to the size theoretically estimated for the onset of improvement of the thermoelectric figure of merit ZT by quantum-size effects. The versatility of the template-assisted growth, combining self-prepared ion-track etched membranes and electrochemical deposition, has been employed to synthesize Bi2Te3 nanowires with controlled diameters in 10, 30, and 60 µm thick membranes and with large aspect ratios (length over diameter) of up to 1000. SEM, HRTEM, and XRD investigations reveal how morphology, surface roughness, and crystalline orientation of the Bi2Te3 nanowires depend on deposition potential, temperature, and channel diameter. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialanalytik 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Ionenstrahlmodifizierte Materialien |
| Hinterlegungsdatum: | 08 Mär 2012 16:18 |
| Letzte Änderung: | 18 Mär 2024 11:11 |
| PPN: | |
| Sponsoren: | We thank the Deutsche Forschungsgemeinschaft (DFG) within the SPP 1386 for financial support., Sandia National Laboratories is a multiprogram laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy’s National Nuclear Security Administration under Contract DE-, AC04-94AL85000. Support for D.L.M. and J.L.-F. was provided, in part, by the Sandia LDRD Office. |
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