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)
Article, Bibliographie
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.
| Item Type: | Article |
|---|---|
| Erschienen: | 2012 |
| Creators: | Picht, Oliver ; Müller, Sven ; Alber, Ina ; Rauber, Markus ; Lensch-Falk, Jessica ; Medlin, Douglas L. ; Neumann, Reinhard ; Toimil-Molares, Maria Eugenia |
| Type of entry: | Bibliographie |
| Title: | Tuning the geometrical and crystallographic characteristics of Bi2Te3 nanowires by electrodeposition in ion-track membranes |
| Language: | English |
| Date: | 8 March 2012 |
| Publisher: | ACS Publications |
| Journal or Publication Title: | Journal of Physical Chemistry C |
| Volume of the journal: | 116 |
| Issue Number: | 9 |
| URL / URN: | http://dx.doi.org/10.1021/jp210491g |
| 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. |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Material Analytics 11 Department of Materials and Earth Sciences > Material Science > Ion-Beam-Modified Materials |
| Date Deposited: | 08 Mar 2012 16:18 |
| Last Modified: | 18 Mar 2024 11:11 |
| PPN: | |
| Funders: | 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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