Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101964
Title: A self-forming nanocomposite concept for ZnO-based thermoelectrics
Authors: Zakharchuk, K. V.
Widenmeyer, M.
Alikin, D. O.
Xie, W.
Populoh, S.
Mikhalev, S. M.
Tselev, A.
Frade, J. R.
Weidenkaff, A.
Kovalevsky, A. V.
Issue Date: 2018
Publisher: Royal Society of Chemistry
Citation: A self-forming nanocomposite concept for ZnO-based thermoelectrics / K. V. Zakharchuk, M. Widenmeyer, D. O. Alikin, et al. — DOI 10.1039/c8ta01463a // Journal of Materials Chemistry A. — 2018. — Vol. 6. — Iss. 27. — P. 13386-13396.
Abstract: Zinc oxide (ZnO) has a very broad and versatile range of applications provided by its high abundance and optical and electrical properties, which can be further tuned by donor substitution. Al-doped ZnO is probably the most thoroughly investigated material with regard to thermoelectric properties. Fairly reasonable electrical properties of donor-doped zinc oxide are usually combined with high thermal conductivity limiting potential applications. Here we report a new self-forming nanocomposite concept for ZnO-based thermoelectrics, where a controllable interplay between the exsolution of the nanophases and modification of the host matrix suppresses the thermal transport while imparting enhanced electrical performance. The thermoelectric performance of the best-obtained composite, described by the dimensionless figure-of-merit ZT, at 920-1200 K is almost twice that of the pure matrix composition and reaches up to 0.11. The proposed approach invokes controlled interactions between composite components as a novel tool for decoupling the electrical and thermal transport parameters and shows clear prospects for an implementation in other thermoelectric oxide systems. The results indicate that the proposed concept may also constitute a promising pathway to achieve stable electrical performance at high temperatures, which currently represents one of the major challenges towards achieving ZnO-based thermoelectrics. © The Royal Society of Chemistry.
Keywords: ALUMINUM COMPOUNDS
II-VI SEMICONDUCTORS
NANOCOMPOSITES
THERMAL CONDUCTIVITY
THERMOELECTRICITY
DIMENSIONLESS FIGURE OF MERIT
ELECTRICAL PERFORMANCE
HIGH THERMAL CONDUCTIVITY
OPTICAL AND ELECTRICAL PROPERTIES
THERMAL TRANSPORT PARAMETERS
THERMOELECTRIC OXIDES
THERMOELECTRIC PERFORMANCE
THERMOELECTRIC PROPERTIES
ZINC OXIDE
URI: http://hdl.handle.net/10995/101964
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85049881285
PURE ID: 7635119
a39e856e-30dd-474c-836c-0629450879db
ISSN: 20507488
DOI: 10.1039/c8ta01463a
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

Files in This Item:
File Description SizeFormat 
2-s2.0-85049881285.pdf6 MBAdobe PDFView/Open


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