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Structural optimization for thermoelectric properties in Cu-Bi-S pavonite compounds

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Title
Structural optimization for thermoelectric properties in Cu-Bi-S pavonite compounds
Author(s)
Jae-Yeol Hwang; Jun Yeon Ahn; Kyu Hyoung Lee; Sung Wng Kim
Subject
Complex structure, ; Crystal structure, ; Electronic and thermal transport properties, ; Interstitial site, ; Pavonite homolog, ; Thermoelectric material
Publication Date
2017-05
Journal
JOURNAL OF ALLOYS AND COMPOUNDS, v.704, pp.282 - 288
Publisher
ELSEVIER SCIENCE SA
Abstract
We report the enhancement of thermoelectric properties in the complex structured Cu-Bi-S pavonite compounds by optimizing the structural configuration through tuning the Bi-site occupancy, and substitutional doping at interstitial Cu sites by Zn. We verify that electronic transport properties depend on the structural deformation by the Bi site occupancy. Furthermore, we demonstrate that the modification of interstitial site ions enables selective control of thermal conductivity and intrinsically low thermal conductivity can be further suppressed by structural optimization without deteriorating electronic transport properties. We propose that understanding of crystal structure as a basic strategy permits the optimization of thermoelectric properties in the complex structures. © 2017 Elsevier B.V
URI
https://pr.ibs.re.kr/handle/8788114/3423
DOI
10.1016/j.jallcom.2017.02.018
ISSN
0925-8388
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
Structural optimization_J. Alloys and Compounds_Jae-Yeol Hwang.pdfDownload

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