Ag9TlTe5 and AgTlTe: High ZT Materials With Extremely Low Thermal Conductivity

TitleAg9TlTe5 and AgTlTe: High ZT Materials With Extremely Low Thermal Conductivity
Publication TypeProceedings Article
Year of Conference2005
AuthorsKurosaki K, Kosuga A, Goto K, Muta H
Conference NameProceedings of the 24th International Conference on Thermoelectrics: ICT2005
Pagination308-311
Conference Start DateJune 2005
PublisherIEEE
Conference LocationClemson, SC USA
EditorTritt T
Abstract

We have studied the thermoelectric properties Ag9TlTe5 and AgTlTe. The thallium compounds have extremely low thermal conductivities around 0.25 Wm-1K-1 from room temperature to about 700 K. The thallium compounds indicate very high ZT values; especially the highest ZT value of Ag9TlTe5 is 1.23 obtained at 700 K. Ag9TlTe5 is a unique material combining extremely low thermal conductivity and relatively low electrical resistivity.
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