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

被引：18

作者：

Kim, Cham ^{[1
,2
]}

Kim, Dong Hwan ^{[1
]}

Han, Yoon Soo ^{[1
]}

Chung, Jong Shik ^{[2
]}

Park, SangHa ^{[3
]}

Park, Soonheum ^{[4
]}

Kim, Hoyoung ^{[1
]}

机构：

[1] DGIST, Taegu 704230, South Korea

[2] Pohang Univ Sci & Technol POSTECH, Dept Chem Engn, Pohang 790784, South Korea

[3] Daegu Machinery Inst Components & Mat DMI, Taegu 704240, South Korea

[4] Dongguk Univ, Dept Nanomat Chem, Gyeongju 780714, Gyeongbuk, South Korea

来源：

MATERIALS RESEARCH BULLETIN | 2011年 / 46卷 / 03期

关键词：

Inorganic compounds; Chemical synthesis; Electron microscopy; X-ray diffraction; Thermal conductivity; PHONON-GLASS; ANTISITE DEFECTS; BI2TE3; NANOTUBES;

D O I：

10.1016/j.materresbull.2010.12.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 Bi2Te2.7Se0.3. 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. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：407 / 412

页数：6

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