Title :
Some properties of GeTe-based thermoelectric alloys
Author_Institution :
Marlow Industries, Inc., Dallas, TX, USA
Abstract :
The semiconductor alloy system (GeTe)1-x(AgSbTe2)x, known as TAGS, is a family of highly degenerate p-type materials with peak ZT well above room temperature. For instance, when x = 0.15, ZT is about 1.4 at 773 K, but is only ∼0.2 at 300 K with a Seebeck coefficient less than 100 μV/K. We revisit this familiar material and some related alloys with regard to their potential for operation at lower temperatures. We are seeking improved room-temperature electrical properties and, consequently, improved figure of merit.
Keywords :
Seebeck effect; germanium compounds; semiconductor materials; silver compounds; thermoelectric power; thermoelectricity; (GeTe)1-x(AgSbTe2)x; 300 K; 773 K; GeTe-based thermoelectric alloys; Seebeck coefficient; figure of merit; highly degenerate p-type materials; room-temperature electrical properties; Copper; Leg; Power generation; Pressing; Probes; Semiconductor materials; Technical Activities Guide -TAG; Temperature distribution; Temperature sensors; Thermoelectricity;
Conference_Titel :
Thermoelectrics, 2003 Twenty-Second International Conference on - ICT
Print_ISBN :
0-7803-8301-X
DOI :
10.1109/ICT.2003.1287500
