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A study of the synthesis of bismuth tellurium selenide nanocompounds and procedures for improving their thermoelectric performance
- A study of the synthesis of bismuth tellurium selenide nanocompounds and procedures for improving their thermoelectric performance
- Kim, C[Kim, Cham]; Kim, DH[Kim, Dong Hwan]; Kim, JS[Kim, Jong Sook]; Han, YS[Han, Yoon Soo]; Chung, JS[Chung, Jong Shik]; Kim, H[Kim, Hoyoung]
- DGIST Authors
- Kim, C[Kim, Cham]; Kim, DH[Kim, Dong Hwan]; Kim, JS[Kim, Jong Sook]; Kim, H[Kim, Hoyoung]
- Issue Date
- Journal of Alloys and Compounds, 509(39), 9472-9478
- Article Type
- Atmospheric Environment; Bi2Te ySe3-y; Bismuth; Chemical Synthesis; Crystalline Structure; Low Thermal Conductivity; Nano-Sized Grains; Nanocompound; Nanocompounds; Selenides; Sintering Condition; Spark Plasma Sintering; Spark Plasma Sintering Process; Synthesis (Chemical); Tellurium; Tellurium Compounds; Thermal Conductivity; Thermo-Electric Application; Thermo-Electric Performance; Thermo-Electricity; Thermo-Electrics; Transport Properties; Water Based; ZT
- A bismuth tellurium selenide (Bi2TeySe3-y) nanocompound for thermoelectric applications was successfully prepared via a water-based chemical reaction in an atmospheric environment. The compound was less that ca. 100 nm in size, with a crystalline structure corresponding to the rhombohedral Bi2Te2.7Se0.3. We sintered the compound via a spark plasma sintering process under the designated sintering conditions and measured the transport properties (i.e., thermal conductivity, resistivity, Seebeck coefficient). The resulting specimens consisted of nanosized grains exhibiting a remarkably low thermal conductivity. Subsequently, we endeavored to improve the other transport properties by adjusting the carrier density of the compound and derived the overall thermoelectric performance by the figure of merit (ZT). © 2011 Elsevier B.V.
- ELSEVIER SCIENCE SA
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- Magnet-Controlled Materials Research Group1. Journal Articles
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