Development of bismuth tellurium selenide nanoparticles for thermoelectric applications via a chemical synthetic process

Cham Kim; Dong Hwan Kim; Yoon Soo Han; Jong Shik Chung; Sangha Park; Soonheum Park; Hoyoung Kim

doi:10.1016/j.materresbull.2010.12.004

Development of bismuth tellurium selenide nanoparticles for thermoelectric applications via a chemical synthetic process

Cham Kim, Dong Hwan Kim, Yoon Soo Han, Jong Shik Chung, Sangha Park, Soonheum Park, Hoyoung Kim

Division of Nanotechnology

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

Bismuth tellurium selenide (Bi₂Te_ySe_3-y) nanoparticles for thermoelectric applications are successfully prepared via a water-based chemical reaction under atmospheric conditions. The nanostructured compound is prepared using a complexing agent (ethylenediaminetetraacetic acid) and a reducing agent (ascorbic acid) to stabilize the bismuth precursor (Bi(NO₃)₃) in water and to favor the reaction with reduced sources of tellurium and selenium. The resulting powder is smaller than ca. 100 nm and has a crystalline structure corresponding to the rhombohedral Bi ₂Te_2.7Se_0.3. The nanocrystalline powder is sintered via a spark plasma sintering process to obtain a sintered body composed of nano-sized grains. Important transport properties of the sintered body are measured to calculate its most important characteristic, the thermoelectric performance. The results demonstrate a relationship between the nanostructure of the sintered body and its thermal conductivity.

Original language	English
Pages (from-to)	407-412
Number of pages	6
Journal	Materials Research Bulletin
Volume	46
Issue number	3
DOIs	https://doi.org/10.1016/j.materresbull.2010.12.004
State	Published - Mar 2011

Bibliographical note

Funding Information:
This work was financially supported by both the DGIST Basic Research Program of the Ministry of Education, Science and Technology (MoEST) and the R&D program for Energy & Resource Technology funded by Gyeongbuk Province and Gyeongju City in the Republic of Korea.

Keywords

A. Inorganic compounds
B. Chemical synthesis
C. Electron microscopy
C. X-ray diffraction
D. Thermal conductivity

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10.1016/j.materresbull.2010.12.004

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title = "Development of bismuth tellurium selenide nanoparticles for thermoelectric applications via a chemical synthetic process",

abstract = "Bismuth tellurium selenide (Bi2TeySe3-y) nanoparticles for thermoelectric applications are successfully prepared via a water-based chemical reaction under atmospheric conditions. The nanostructured compound is prepared using a complexing agent (ethylenediaminetetraacetic acid) and a reducing agent (ascorbic acid) to stabilize the bismuth precursor (Bi(NO3)3) in water and to favor the reaction with reduced sources of tellurium and selenium. The resulting powder is smaller than ca. 100 nm and has a crystalline structure corresponding to the rhombohedral Bi 2Te2.7Se0.3. The nanocrystalline powder is sintered via a spark plasma sintering process to obtain a sintered body composed of nano-sized grains. Important transport properties of the sintered body are measured to calculate its most important characteristic, the thermoelectric performance. The results demonstrate a relationship between the nanostructure of the sintered body and its thermal conductivity.",

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author = "Cham Kim and Kim, \{Dong Hwan\} and Han, \{Yoon Soo\} and Chung, \{Jong Shik\} and Sangha Park and Soonheum Park and Hoyoung Kim",

note = "Funding Information: This work was financially supported by both the DGIST Basic Research Program of the Ministry of Education, Science and Technology (MoEST) and the R\&D program for Energy \& Resource Technology funded by Gyeongbuk Province and Gyeongju City in the Republic of Korea.",

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AU - Kim, Cham

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AU - Han, Yoon Soo

AU - Chung, Jong Shik

AU - Park, Sangha

AU - Park, Soonheum

AU - Kim, Hoyoung

N1 - Funding Information: This work was financially supported by both the DGIST Basic Research Program of the Ministry of Education, Science and Technology (MoEST) and the R&D program for Energy & Resource Technology funded by Gyeongbuk Province and Gyeongju City in the Republic of Korea.

PY - 2011/3

Y1 - 2011/3

N2 - Bismuth tellurium selenide (Bi2TeySe3-y) nanoparticles for thermoelectric applications are successfully prepared via a water-based chemical reaction under atmospheric conditions. The nanostructured compound is prepared using a complexing agent (ethylenediaminetetraacetic acid) and a reducing agent (ascorbic acid) to stabilize the bismuth precursor (Bi(NO3)3) in water and to favor the reaction with reduced sources of tellurium and selenium. The resulting powder is smaller than ca. 100 nm and has a crystalline structure corresponding to the rhombohedral Bi 2Te2.7Se0.3. The nanocrystalline powder is sintered via a spark plasma sintering process to obtain a sintered body composed of nano-sized grains. Important transport properties of the sintered body are measured to calculate its most important characteristic, the thermoelectric performance. The results demonstrate a relationship between the nanostructure of the sintered body and its thermal conductivity.

AB - Bismuth tellurium selenide (Bi2TeySe3-y) nanoparticles for thermoelectric applications are successfully prepared via a water-based chemical reaction under atmospheric conditions. The nanostructured compound is prepared using a complexing agent (ethylenediaminetetraacetic acid) and a reducing agent (ascorbic acid) to stabilize the bismuth precursor (Bi(NO3)3) in water and to favor the reaction with reduced sources of tellurium and selenium. The resulting powder is smaller than ca. 100 nm and has a crystalline structure corresponding to the rhombohedral Bi 2Te2.7Se0.3. The nanocrystalline powder is sintered via a spark plasma sintering process to obtain a sintered body composed of nano-sized grains. Important transport properties of the sintered body are measured to calculate its most important characteristic, the thermoelectric performance. The results demonstrate a relationship between the nanostructure of the sintered body and its thermal conductivity.

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KW - B. Chemical synthesis

KW - C. Electron microscopy

KW - C. X-ray diffraction

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JO - Materials Research Bulletin

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Development of bismuth tellurium selenide nanoparticles for thermoelectric applications via a chemical synthetic process

Abstract

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