Nano letters, 2009-04, Vol.9 (4), p.1419-1422
2009
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Details
- Autor(en) / Beteiligte
- Titel
- Structure Study of Bulk Nanograined Thermoelectric Bismuth Antimony Telluride
- Ist Teil von
- Nano letters, 2009-04, Vol.9 (4), p.1419-1422
- Ort / Verlag
- Washington, DC: American Chemical Society
- Erscheinungsjahr
- 2009
- Quelle
- Alma/SFX Local Collection
- Beschreibungen/Notizen
- The microstructures of bulk nanograined p-type bismuth antimony telluride with a thermoelectric dimensionless figure-of-merit ZT = 1.4 are investigated using transmission electron microscopy. It is found that the bulk material contains both nano- and microsized grains. Between the nanograins, bismuth-rich interface regions with a 4 nm thickness were detected. In addition, nanoprecipitates as well as other defects are also found to be embedded in the nanograins. The high ZT is attributed to the slight increase in the electrical conductivity, and to the large decrease of the thermal conductivity.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 1530-6984eISSN: 1530-6992DOI: 10.1021/nl803235nTitel-ID: cdi_proquest_miscellaneous_67110471
- Format
- –
- Schlagworte
- Condensed matter: electronic structure, electrical, magnetic, and optical properties, Condensed matter: structure, mechanical and thermal properties, Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures, Electronic transport in multilayers, nanoscale materials and structures, Exact sciences and technology, Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties, Physics, Surfaces and interfaces, thin films and whiskers (structure and nonelectronic properties), Thermal properties of condensed matter, Thermal properties of small particles, nanocrystals, nanotubes