Lattice dynamics and thermoelectric properties of nanocrystalline silicon-germanium alloys
Abstract
The lattice dynamics and thermoelectric properties of sintered phosphorus-doped nanostructured silicon- germanium alloys obtained by gas-phase synthesis were studied. Measurements of the density of phonon states by inelastic neutron scattering were combined with measurements of the elastic constants and the low- temperature heat capacity. A strong influence of nanostructuring and alloying on the lattice dynamics was observed. The thermoelectric transport properties of samples with different doping as well as samples sintered at different temperature were characterized between room temperature and 1000C. A peak figure of merit zT = 0:88 at 900C is observed and comparatively insensitive to the aforementioned param- eter variations.
- Authors:
-
- Julich Research Centre (Germany). Julich Centre for Neutron Science (JCNS)
- University of Duisburg-Essen (Germany)
- Forschungszentrum Julich (Germany)
- Inst. Laue-Langevin (ILL), Grenoble (France)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1240536
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Physica Status Solidi. A, Applications and Materials Science
- Additional Journal Information:
- Journal Volume: 213; Journal Issue: 3; Journal ID: ISSN 1862-6300
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; SiGe alloy; thermoelectric; lattice dynamics; transport properties
Citation Formats
Claudio, Tania, Stein, Niklas, Peterman, Nils, Stroppa, Daniel, Koza, Michael M., Wiggers, Hartmut, Klobes, B., Schierning, Gabi, and Hermann, Raphael P. Lattice dynamics and thermoelectric properties of nanocrystalline silicon-germanium alloys. United States: N. p., 2015.
Web. doi:10.1002/pssa.201532500.
Claudio, Tania, Stein, Niklas, Peterman, Nils, Stroppa, Daniel, Koza, Michael M., Wiggers, Hartmut, Klobes, B., Schierning, Gabi, & Hermann, Raphael P. Lattice dynamics and thermoelectric properties of nanocrystalline silicon-germanium alloys. United States. https://doi.org/10.1002/pssa.201532500
Claudio, Tania, Stein, Niklas, Peterman, Nils, Stroppa, Daniel, Koza, Michael M., Wiggers, Hartmut, Klobes, B., Schierning, Gabi, and Hermann, Raphael P. 2015.
"Lattice dynamics and thermoelectric properties of nanocrystalline silicon-germanium alloys". United States. https://doi.org/10.1002/pssa.201532500. https://www.osti.gov/servlets/purl/1240536.
@article{osti_1240536,
title = {Lattice dynamics and thermoelectric properties of nanocrystalline silicon-germanium alloys},
author = {Claudio, Tania and Stein, Niklas and Peterman, Nils and Stroppa, Daniel and Koza, Michael M. and Wiggers, Hartmut and Klobes, B. and Schierning, Gabi and Hermann, Raphael P.},
abstractNote = {The lattice dynamics and thermoelectric properties of sintered phosphorus-doped nanostructured silicon- germanium alloys obtained by gas-phase synthesis were studied. Measurements of the density of phonon states by inelastic neutron scattering were combined with measurements of the elastic constants and the low- temperature heat capacity. A strong influence of nanostructuring and alloying on the lattice dynamics was observed. The thermoelectric transport properties of samples with different doping as well as samples sintered at different temperature were characterized between room temperature and 1000C. A peak figure of merit zT = 0:88 at 900C is observed and comparatively insensitive to the aforementioned param- eter variations.},
doi = {10.1002/pssa.201532500},
url = {https://www.osti.gov/biblio/1240536},
journal = {Physica Status Solidi. A, Applications and Materials Science},
issn = {1862-6300},
number = 3,
volume = 213,
place = {United States},
year = {Mon Oct 26 00:00:00 EDT 2015},
month = {Mon Oct 26 00:00:00 EDT 2015}
}
Web of Science
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Works referencing / citing this record:
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