Synergetic Enhancement of Thermoelectric Performances by Localized Carrier and Phonon Scattering in Cu2Se with Incorporated Fullerene Nanoparticles

Title
Synergetic Enhancement of Thermoelectric Performances by Localized Carrier and Phonon Scattering in Cu2Se with Incorporated Fullerene Nanoparticles
Authors
김정원김영실황준필김수진김성진
Issue Date
2021-04
Publisher
Nanoscale Advances
Citation
VOL 3, NO 11-3113
Abstract
The C60/Cu2Se thermoelectric nanocomposites were synthesized with various amounts of fullerene (C60; 0.03, 0.3, 0.5, 0.7 mol%) incorporated in Cu2Se. The thermoelectric figures of merits (zT) of the C60/Cu2Se nanocomposites were enhanced by 20-30 % compared to that of pure Cu2Se, attaining a value of 1.4 at 773 K. The primary cause of zT enhancement is the synergetic effect of thermal conductivity reduction by phonon scattering and Seebeck coefficient increase by carrier localization which is a type of carrier filtering that results from incorporation of C60 nanoparticles. Theoretical calculations for Seebeck coefficient enhancement and lattice thermal conductivity reduction were conducted. The Seebeck coefficients of C60/Cu2Se nanocomposites were around 43 % higher than that of pure Cu2Se, whereas the reduction of lattice thermal conductivity with incorporation of C60 was around 40-50 %.
URI
http://pubs.kist.re.kr/handle/201004/73037
ISSN
2516-0230
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

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

BROWSE