Thermoelectric property studies on CuxBi2SeS2with nano-scale precipitates Bi2S3

L. Li; Y. Liu; Jiyan Dai; H. X. Zhu; A. J. Hong; X. H. Zhou; Z. F. Ren; J. M. Liu

doi:10.1016/j.nanoen.2015.01.020

Thermoelectric property studies on Cu_xBi₂SeS₂with nano-scale precipitates Bi₂S₃

L. Li
, Y. Liu
, Jiyan Dai
, H. X. Zhu
, A. J. Hong
, X. H. Zhou
, Z. F. Ren
, J. M. Liu

Research output: Journal article publication › Journal article › Academic research › peer-review

43 Citations (Scopus)

Abstract

The microscopic mechanisms for higher thermoelectric performance of cost competitive rock salt compound Bi2SeS2were investigated. A low doping of Cu as an n-type dopant was conducted in order to optimize the band structure and improve the electrical conductivity. It was revealed that this compound exhibits a Seebeck coefficient higher than 300μVK-1, which sustains above 100μVK-1even with Cu doping, leading to a higher power factor. The microstructural characterizations revealed nano-scale Bi2S3precipitates in the CuxBi2SeS2matrix, beneficial to the lower lattice thermal conductivity that is insensitive to the Cu doping. A thermoelectric figure-of-merit factor ZT of ~0.7 at 450°C in accompanying with the power factor of ~5.36μWcm-1K-2was obtained under the optimized doping level, enabling this environmentally friendly compound interesting for thermoelectric power generation applications.

Original language	English
Pages (from-to)	447-456
Number of pages	10
Journal	Nano Energy
Volume	12
DOIs	https://doi.org/10.1016/j.nanoen.2015.01.020
Publication status	Published - 1 Mar 2015

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Bi SeS 2 2
Cu doping
Nano-scale Bi S precipitates 2 3
Thermoelectric

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
General Materials Science
Electrical and Electronic Engineering

More information

10.1016/j.nanoen.2015.01.020

Cite this

@article{b5f585d74ba1441c8869e9d3f9895eb0,

title = "Thermoelectric property studies on CuxBi2SeS2with nano-scale precipitates Bi2S3",

abstract = "The microscopic mechanisms for higher thermoelectric performance of cost competitive rock salt compound Bi2SeS2were investigated. A low doping of Cu as an n-type dopant was conducted in order to optimize the band structure and improve the electrical conductivity. It was revealed that this compound exhibits a Seebeck coefficient higher than 300μVK-1, which sustains above 100μVK-1even with Cu doping, leading to a higher power factor. The microstructural characterizations revealed nano-scale Bi2S3precipitates in the CuxBi2SeS2matrix, beneficial to the lower lattice thermal conductivity that is insensitive to the Cu doping. A thermoelectric figure-of-merit factor ZT of \textasciitilde{}0.7 at 450°C in accompanying with the power factor of \textasciitilde{}5.36μWcm-1K-2was obtained under the optimized doping level, enabling this environmentally friendly compound interesting for thermoelectric power generation applications.",

keywords = "Bi SeS 2 2, Cu doping, Nano-scale Bi S precipitates 2 3, Thermoelectric",

author = "L. Li and Y. Liu and Jiyan Dai and Zhu, \{H. X.\} and Hong, \{A. J.\} and Zhou, \{X. H.\} and Ren, \{Z. F.\} and Liu, \{J. M.\}",

year = "2015",

month = mar,

day = "1",

doi = "10.1016/j.nanoen.2015.01.020",

language = "English",

volume = "12",

pages = "447--456",

journal = "Nano Energy",

issn = "2211-2855",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Thermoelectric property studies on CuxBi2SeS2with nano-scale precipitates Bi2S3

AU - Li, L.

AU - Liu, Y.

AU - Dai, Jiyan

AU - Zhu, H. X.

AU - Hong, A. J.

AU - Zhou, X. H.

AU - Ren, Z. F.

AU - Liu, J. M.

PY - 2015/3/1

Y1 - 2015/3/1

N2 - The microscopic mechanisms for higher thermoelectric performance of cost competitive rock salt compound Bi2SeS2were investigated. A low doping of Cu as an n-type dopant was conducted in order to optimize the band structure and improve the electrical conductivity. It was revealed that this compound exhibits a Seebeck coefficient higher than 300μVK-1, which sustains above 100μVK-1even with Cu doping, leading to a higher power factor. The microstructural characterizations revealed nano-scale Bi2S3precipitates in the CuxBi2SeS2matrix, beneficial to the lower lattice thermal conductivity that is insensitive to the Cu doping. A thermoelectric figure-of-merit factor ZT of ~0.7 at 450°C in accompanying with the power factor of ~5.36μWcm-1K-2was obtained under the optimized doping level, enabling this environmentally friendly compound interesting for thermoelectric power generation applications.

AB - The microscopic mechanisms for higher thermoelectric performance of cost competitive rock salt compound Bi2SeS2were investigated. A low doping of Cu as an n-type dopant was conducted in order to optimize the band structure and improve the electrical conductivity. It was revealed that this compound exhibits a Seebeck coefficient higher than 300μVK-1, which sustains above 100μVK-1even with Cu doping, leading to a higher power factor. The microstructural characterizations revealed nano-scale Bi2S3precipitates in the CuxBi2SeS2matrix, beneficial to the lower lattice thermal conductivity that is insensitive to the Cu doping. A thermoelectric figure-of-merit factor ZT of ~0.7 at 450°C in accompanying with the power factor of ~5.36μWcm-1K-2was obtained under the optimized doping level, enabling this environmentally friendly compound interesting for thermoelectric power generation applications.

KW - Bi SeS 2 2

KW - Cu doping

KW - Nano-scale Bi S precipitates 2 3

KW - Thermoelectric

UR - https://www.scopus.com/pages/publications/84921780867

U2 - 10.1016/j.nanoen.2015.01.020

DO - 10.1016/j.nanoen.2015.01.020

M3 - Journal article

SN - 2211-2855

VL - 12

SP - 447

EP - 456

JO - Nano Energy

JF - Nano Energy

ER -