File Download

There are no files associated with this item.

  • Find it @ UNIST can give you direct access to the published full text of this article. (UNISTARs only)

Views & Downloads

Detailed Information

Cited time in webofscience Cited time in scopus
Metadata Downloads

All-Inorganic Nanocrystals as a Glue for BiSbTe Grains: Design of Interfaces in Mesostructured Thermoelectric Materials

Author(s)
Son, Jae SungZhang, HaoJang, JaeyoungPoudel, BedWaring, AlNally, LukeTalapin, Dmitri V.
Issued Date
2014-07
DOI
10.1002/anie.201402026
URI
https://scholarworks.unist.ac.kr/handle/201301/7205
Citation
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v.53, no.29, pp.7466 - 7470
Abstract
Nano- and mesostructuring is widely used in thermoelectric (TE) materials. It introduces numerous interfaces and grain boundaries that scatter phonons and decrease thermal conductivity. A new approach has been developed for the rational design of the interfaces in TE materials by using all-inorganic nanocrystals (NCs) that serve as a "glue" for mesoscopic grains. For example, circa 10 nm Bi NCs capped with (N2H5)(4)Sb2Te7 chalcogenidometallate ligands can be used as an additive to BiSbTe particles. During heat treatment, NCs fill up the voids between particles and act as a "glue", joining grains in hot-pressed pellets or solution-processed films. The chemical design of NC glue allowed the selective enhancement or decrease of the majority-carrier concentration near the grain boundaries, and thus resulted in doped or de-doped interfaces in granular TE material. Chemically engineered interfaces can be used as to optimize power factor and thermal conductivity.
Publisher
WILEY-V C H VERLAG GMBH
ISSN
1433-7851

qrcode

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.