|Title||Ag9TlTe5 and AgTlTe: High ZT Materials With Extremely Low Thermal Conductivity|
|Publication Type||Proceedings Article|
|Year of Conference||2005|
|Authors||Kurosaki K, Kosuga A, Goto K, Muta H|
|Conference Name||Proceedings of the 24th International Conference on Thermoelectrics: ICT2005|
|Conference Start Date||June 2005|
|Conference Location||Clemson, SC USA|
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.