High temperature thermoelectric properties of Czochralski-pulled Ba8Ga16Ge30

High temperature thermoelectric properties have been measured on a Czochralski pulled Ba
₈
Ga
₁₆
Ge
₃₀
crystal. Complete transport properties obtained in the temperature range from 273K to 1150K. The physical properties are reproducible even after thermal cycling. The Seebeck coefficient reveals the sample to be an n-type conductor with a maximum value of -148 muV/K at 1073K. The electrical resistivity shows the characteristics of a heavily doped semi conductor, and it goes through a maximum at 1073 K with a value of 1.7 mOmega-cm. The thermal conductivity goes through a minimum of 1.25 W/m-K around 900K, and ZT reaches a maximum of 0.9 at 1000 K