Lee, JS Oh, TS Hyun, DB 2024-01-21T14:31:40Z 2024-01-21T14:31:40Z 2022-01-10 2000-02 0022-2461 https://pubs.kist.re.kr/handle/201004/141598 Thermoelectric properties of the (Bi0.2Sb0.8)(2)Te-3 alloy, fabricated by mechanical alloying and hot-pressing, were investigated with addition of BN and WO3 powders as phonon scattering centers. The Seebeck coefficient and the electrical resistivity of the hot-pressed (Bi0.2Sb0.8)(2)Te-3 alloy increased with increasing the volume fraction of BN and WO3. Although the thermal conductivity of the hot-pressed (Bi0.2Sb0.8)(2)Te-3 alloy decreased with increasing the volume fraction of BN and WO3 due to the reduction of kappa(e)l, the lattice thermal conductivity was not lowered. The figure-of-merit of the hot-pressed (Bi0.2Sb0.8)(2)Te-3 alloy, 3.05 x 10(-3)/K without addition of BN and WO3, decreased with increasing the volume fraction of BN and WO3, because the increment of the electrical resistivity was much larger than the decrement of the thermal conductivity due to the grain refinement. (C) 2000 Kluwer Academic Publishers. English SPRINGER Thermoelectric properties of the hot-pressed (Bi0.2Sb0.8)(2)Te-3 alloy with addition of BN and WO3 powders Article 10.1023/A:1004790106241 1 JOURNAL OF MATERIALS SCIENCE, v.35, no.4, pp.881 - 887 JOURNAL OF MATERIALS SCIENCE 35 4 881 887 scie scopus 000085037800013 2-s2.0-0033895397 Materials Science, Multidisciplinary Materials Science Article bismuth telluride