SnSe

A remarkable new thermoelectric material

Li Dong Zhao, Cheng Chang, Gangjian Tan, Mercouri G Kanatzidis

Research output: Contribution to journalReview article

119 Citations (Scopus)

Abstract

The deceptively simple material SnSe has surprised the scientific community by showing an unexpectedly low thermal conductivity and high power factor and it has become a very promising thermoelectric material. Both the electrical and thermal transport properties of SnSe are outstanding. It is remarkable that a binary compound exhibits strong anharmonic and anisotropic bonding, and after hole doping it shows an exceptionally high power factor because of a high electrical conductivity and a strongly enhanced Seebeck coefficient. The latter is enabled by the contribution of multiple electronic valence bands. In this perspective, we discuss the natural features of SnSe, including crystal structures, electronic band structures, and physical and chemical properties. We also compare the electrical transport properties of single crystals and polycrystalline SnSe. The thermal conductivities of polycrystalline samples show wide variation from laboratory to laboratory, with some values being higher than those of single crystals and some lower, which has caused confusion and controversy. To address the issues regarding the thermal transport properties of SnSe, we systematically summarize the reports for SnSe variants, discuss them along with some of our own new results, and offer possible explanations. Finally, some possible strategies are proposed toward future enhancements of the thermoelectric figure of merit of SnSe.

Original languageEnglish
Pages (from-to)3044-3060
Number of pages17
JournalEnergy and Environmental Science
Volume9
Issue number10
DOIs
Publication statusPublished - Oct 1 2016

Fingerprint

thermal conductivity
Transport properties
crystal
natural feature
Thermal conductivity
crystal structure
Single crystals
electrical conductivity
chemical property
Seebeck coefficient
physical property
Valence bands
Band structure
Chemical properties
Physical properties
Crystal structure
Doping (additives)
new material
laboratory
electronics

ASJC Scopus subject areas

  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Pollution

Cite this

SnSe : A remarkable new thermoelectric material. / Zhao, Li Dong; Chang, Cheng; Tan, Gangjian; Kanatzidis, Mercouri G.

In: Energy and Environmental Science, Vol. 9, No. 10, 01.10.2016, p. 3044-3060.

Research output: Contribution to journalReview article

Zhao, Li Dong ; Chang, Cheng ; Tan, Gangjian ; Kanatzidis, Mercouri G. / SnSe : A remarkable new thermoelectric material. In: Energy and Environmental Science. 2016 ; Vol. 9, No. 10. pp. 3044-3060.
@article{79d8fe8b92424279aae9fe25c83f5895,
title = "SnSe: A remarkable new thermoelectric material",
abstract = "The deceptively simple material SnSe has surprised the scientific community by showing an unexpectedly low thermal conductivity and high power factor and it has become a very promising thermoelectric material. Both the electrical and thermal transport properties of SnSe are outstanding. It is remarkable that a binary compound exhibits strong anharmonic and anisotropic bonding, and after hole doping it shows an exceptionally high power factor because of a high electrical conductivity and a strongly enhanced Seebeck coefficient. The latter is enabled by the contribution of multiple electronic valence bands. In this perspective, we discuss the natural features of SnSe, including crystal structures, electronic band structures, and physical and chemical properties. We also compare the electrical transport properties of single crystals and polycrystalline SnSe. The thermal conductivities of polycrystalline samples show wide variation from laboratory to laboratory, with some values being higher than those of single crystals and some lower, which has caused confusion and controversy. To address the issues regarding the thermal transport properties of SnSe, we systematically summarize the reports for SnSe variants, discuss them along with some of our own new results, and offer possible explanations. Finally, some possible strategies are proposed toward future enhancements of the thermoelectric figure of merit of SnSe.",
author = "Zhao, {Li Dong} and Cheng Chang and Gangjian Tan and Kanatzidis, {Mercouri G}",
year = "2016",
month = "10",
day = "1",
doi = "10.1039/c6ee01755j",
language = "English",
volume = "9",
pages = "3044--3060",
journal = "Energy and Environmental Science",
issn = "1754-5692",
publisher = "Royal Society of Chemistry",
number = "10",

}

TY - JOUR

T1 - SnSe

T2 - A remarkable new thermoelectric material

AU - Zhao, Li Dong

AU - Chang, Cheng

AU - Tan, Gangjian

AU - Kanatzidis, Mercouri G

PY - 2016/10/1

Y1 - 2016/10/1

N2 - The deceptively simple material SnSe has surprised the scientific community by showing an unexpectedly low thermal conductivity and high power factor and it has become a very promising thermoelectric material. Both the electrical and thermal transport properties of SnSe are outstanding. It is remarkable that a binary compound exhibits strong anharmonic and anisotropic bonding, and after hole doping it shows an exceptionally high power factor because of a high electrical conductivity and a strongly enhanced Seebeck coefficient. The latter is enabled by the contribution of multiple electronic valence bands. In this perspective, we discuss the natural features of SnSe, including crystal structures, electronic band structures, and physical and chemical properties. We also compare the electrical transport properties of single crystals and polycrystalline SnSe. The thermal conductivities of polycrystalline samples show wide variation from laboratory to laboratory, with some values being higher than those of single crystals and some lower, which has caused confusion and controversy. To address the issues regarding the thermal transport properties of SnSe, we systematically summarize the reports for SnSe variants, discuss them along with some of our own new results, and offer possible explanations. Finally, some possible strategies are proposed toward future enhancements of the thermoelectric figure of merit of SnSe.

AB - The deceptively simple material SnSe has surprised the scientific community by showing an unexpectedly low thermal conductivity and high power factor and it has become a very promising thermoelectric material. Both the electrical and thermal transport properties of SnSe are outstanding. It is remarkable that a binary compound exhibits strong anharmonic and anisotropic bonding, and after hole doping it shows an exceptionally high power factor because of a high electrical conductivity and a strongly enhanced Seebeck coefficient. The latter is enabled by the contribution of multiple electronic valence bands. In this perspective, we discuss the natural features of SnSe, including crystal structures, electronic band structures, and physical and chemical properties. We also compare the electrical transport properties of single crystals and polycrystalline SnSe. The thermal conductivities of polycrystalline samples show wide variation from laboratory to laboratory, with some values being higher than those of single crystals and some lower, which has caused confusion and controversy. To address the issues regarding the thermal transport properties of SnSe, we systematically summarize the reports for SnSe variants, discuss them along with some of our own new results, and offer possible explanations. Finally, some possible strategies are proposed toward future enhancements of the thermoelectric figure of merit of SnSe.

UR - http://www.scopus.com/inward/record.url?scp=84990996545&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84990996545&partnerID=8YFLogxK

U2 - 10.1039/c6ee01755j

DO - 10.1039/c6ee01755j

M3 - Review article

VL - 9

SP - 3044

EP - 3060

JO - Energy and Environmental Science

JF - Energy and Environmental Science

SN - 1754-5692

IS - 10

ER -