Microstructure and Thermoelectric Properties of Rapidly Solidified and Hot Pressed N-Type 95% Bi2Te3-5%Bi2Se3 Alloys
Year: 2007
Type: article
Abstract: N-type 0.05wt% SbI 3 -doped Bi 2 Te 2.85 Se 0.15 compounds were fabricated by gas atomizing and hot pressing. The as-fabricated powder consists of homogeneous Bi 2 Te 3 +Bi 2 Se 3 solid solution and a maximum theoretical density of 98.9% was obtained after hot pressing, resulting in improvement of compression strength up to 4-5 times of the conventionally prepared single crystal thermoelectric material. The values of the Seebeck coefficient for hot pressed specimens vertical of the pressing direction with small and large powder size were -178 and -218μV/K, respectively. The values of the electrical resistivity for hot pressed specimens vertical of the pressing direction with small and large powder with small and large powder size were 1.245 and 1.728×10 -5 Q m, respectively.
Source: Materials science forum
Institution: Korea Institute of Industrial Technology
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W2046821381