LOW-TEMPERATURE THERMOELECTRIC MATERIAL AND METHOD OF ITS PRODUCTION Russian patent published in 2018 - IPC C30B13/00 C30B13/04 C30B13/10 C30B29/52 C22C12/00 H01L35/18 H01L35/34 B82B1/00 B82B3/00 B82Y40/00 

FIELD: electricity.

SUBSTANCE: method for obtaining a low temperature thermoelectric material based on the Bi₈₈Sb₁₂ alloy with gadolinium additions involves placing a sample of the Bi₈₈Sb₁₂ alloy and metallic gadolinium in an amount of 0.01-0.1 at % to a glass ampoule from which air is evacuated to 10^-3 mm Hg and sealed, placing the ampoule in the furnace, heating it to the melting point of the alloy until gadolinium is completely dissolved, zone equalization at a rate of 2 cm/h, and growing the single crystal by a seed of a given orientation by the zone recrystallization method with an even pass at a speed of 0.5 mm/h. The resulting thermoelectric material consists of a single crystal of Bi₈₈Sb₁₁ with gadolinium nanoparticles distributed in the interlayer space, leading to an increase in the ratio of mobilities of electrons and holes without changing the concentration of charge carriers.

EFFECT: increase in the differential thermoelectric power module and, accordingly, thermoelectric efficiency.

2 cl, 3 dwg