Effects of Bi 2 Se 3  Amount in Thermoelectric Performance of Bi 2 (TeSe) 3  Materials Fabricated by High‐Energy Ball Milling | Zendy

Rimal Pradip | Zendy; Han Seung Tek | Zendy; Hong SoonJik | Zendy; Kim HyoSeob | Zendy; Cho Kuk Young | Zendy; Lee Ilsueuk | Zendy

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Effects of Bi 2 Se 3 Amount in Thermoelectric Performance of Bi 2 (TeSe) 3 Materials Fabricated by High‐Energy Ball Milling

Author(s) -

Rimal Pradip,

Han Seung Tek,

Hong SoonJik,

Kim HyoSeob,

Cho Kuk Young,

Lee Ilsueuk

Publication year - 2016

Publication title -

international journal of applied ceramic technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.4

H-Index - 57

eISSN - 1744-7402

pISSN - 1546-542X

DOI - 10.1111/ijac.12534

Subject(s) - materials science , spark plasma sintering , thermoelectric effect , ball mill , thermoelectric materials , fabrication , sintering , metallurgy , figure of merit , composite material , optoelectronics , thermal conductivity , thermodynamics , medicine , physics , alternative medicine , pathology

Amount of Bi 2 Se 3 has significant role in controlling thermoelectric properties of n‐type Bi 2 (TeSe) 3 material. In this study, effects of Se alloying amount in Bi 2 (TeSe) 3 thermoelectric materials fabricated by high‐energy ball milling and spark plasma sintering were studied and compared with other fabrication methods. Amount of Bi 2 Se 3 (5%, 10%, 15%, and 20%) did not have any significant effect over fabricated powder size, grains of consolidated bulks, and mechanical properties; however, electrical properties and thermoelectric efficiency were noticeably influenced. Both carrier concentration and carrier mobility decreased with increase in Se amount. In total, 20% Se alloying was effective in improving thermoelectric figure of merit ZT value by almost 40% compared with only 5% Se alloying.

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