Hyun, DB Hwang, JS Shim, JD Oh, TS 2024-01-21T12:40:25Z 2024-01-21T12:40:25Z 2022-01-10 2001-03 0022-2461 https://pubs.kist.re.kr/handle/201004/140660 Thermoelectric properties of the hot-pressed p-type (Bi0.25Sb0.75)(2)Te-3 alloy were characterized with variation of the hot-pressing temperature and the starting powder size. The roles of the factors which affect the Seebeck coefficient of the hot-pressed (Bi0.25Sb0.75)(2)Te-3 alloy has been elucidated in this study. The donor-like behavior of oxygen could be one of the possible explanations for the higher Seebeck coefficient of the hot-pressed (Bi0.25Sb0.75)(2)Te-3 alloy. Te vacancies formed by mechanical deformation during the powdering process significantly promote the diffusion of second phase Te atoms into their lattice sites so that the matrix Te solubility approaches its equilibrium value at a given temperature in a relatively short length of time. Using the Seebeck coefficient at various hot-pressing temperatures, the micro-phase diagram near the stoichiometric composition of (Bi0.25Sb0.75)(2)Te-3 was evaluated. (C) 2001 Kluwer Academic Publishers. English SPRINGER Thermoelectric properties of (Bi0.25Sb0.75)(2)Te-3 alloys fabricated by hot-pressing method Article 10.1023/A:1004862700211 1 JOURNAL OF MATERIALS SCIENCE, v.36, no.5, pp.1285 - 1291 JOURNAL OF MATERIALS SCIENCE 36 5 1285 1291 N scie scopus 000167574400029 2-s2.0-0035271854 Materials Science, Multidisciplinary Materials Science Article BI2TE3 bismuth telluride