In situ nanostructure generation and evolution within a bulk thermoelectric material to reduce lattice thermal conductivity

Steven N. Girard; Jiaqing He; Changpeng Li; Steven Moses; Guoyu Wang; Ctirad Uher; Vinayak P. Dravid; Mercouri G. Kanatzidis

doi:10.1021/nl100743q

In situ nanostructure generation and evolution within a bulk thermoelectric material to reduce lattice thermal conductivity

Steven N. Girard, Jiaqing He, Changpeng Li, Steven Moses, Guoyu Wang, Ctirad Uher, Vinayak P. Dravid, Mercouri G. Kanatzidis

Research output: Contribution to journal › Article › peer-review

110 Scopus citations

Abstract

We show experimentally the direct reduction in lattice thermal conductivity as a result of in situ nanostructure generation within a thermoelectric material. Solid solution alloys of the high-performance thermoelectric PbTe-PbS 8% can be synthesized through rapid cooling and subsequent high-temperature activation that induces a spontaneous nucleation and growth of PbS nanocrystals. The emergence of coherent PbS nanostructures reduces the lattice thermal conductivity from ∼1 to ∼0.4 W/mK between 400 and 500 K.

Original language	English (US)
Pages (from-to)	2825-2831
Number of pages	7
Journal	Nano letters
Volume	10
Issue number	8
DOIs	https://doi.org/10.1021/nl100743q
State	Published - Aug 11 2010

Keywords

Thermoelectric materials
nucleation and growth
semiconductors
thermal conductivity

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Bioengineering
General Chemistry
General Materials Science

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10.1021/nl100743q

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title = "In situ nanostructure generation and evolution within a bulk thermoelectric material to reduce lattice thermal conductivity",

abstract = "We show experimentally the direct reduction in lattice thermal conductivity as a result of in situ nanostructure generation within a thermoelectric material. Solid solution alloys of the high-performance thermoelectric PbTe-PbS 8% can be synthesized through rapid cooling and subsequent high-temperature activation that induces a spontaneous nucleation and growth of PbS nanocrystals. The emergence of coherent PbS nanostructures reduces the lattice thermal conductivity from ∼1 to ∼0.4 W/mK between 400 and 500 K.",

keywords = "Thermoelectric materials, nucleation and growth, semiconductors, thermal conductivity",

author = "Girard, {Steven N.} and Jiaqing He and Changpeng Li and Steven Moses and Guoyu Wang and Ctirad Uher and Dravid, {Vinayak P.} and Kanatzidis, {Mercouri G.}",

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AU - Girard, Steven N.

AU - He, Jiaqing

AU - Li, Changpeng

AU - Moses, Steven

AU - Wang, Guoyu

AU - Uher, Ctirad

AU - Dravid, Vinayak P.

AU - Kanatzidis, Mercouri G.

PY - 2010/8/11

Y1 - 2010/8/11

N2 - We show experimentally the direct reduction in lattice thermal conductivity as a result of in situ nanostructure generation within a thermoelectric material. Solid solution alloys of the high-performance thermoelectric PbTe-PbS 8% can be synthesized through rapid cooling and subsequent high-temperature activation that induces a spontaneous nucleation and growth of PbS nanocrystals. The emergence of coherent PbS nanostructures reduces the lattice thermal conductivity from ∼1 to ∼0.4 W/mK between 400 and 500 K.

AB - We show experimentally the direct reduction in lattice thermal conductivity as a result of in situ nanostructure generation within a thermoelectric material. Solid solution alloys of the high-performance thermoelectric PbTe-PbS 8% can be synthesized through rapid cooling and subsequent high-temperature activation that induces a spontaneous nucleation and growth of PbS nanocrystals. The emergence of coherent PbS nanostructures reduces the lattice thermal conductivity from ∼1 to ∼0.4 W/mK between 400 and 500 K.

KW - Thermoelectric materials

KW - nucleation and growth

KW - semiconductors

KW - thermal conductivity

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JO - Nano letters

JF - Nano letters

IS - 8

ER -

In situ nanostructure generation and evolution within a bulk thermoelectric material to reduce lattice thermal conductivity

Abstract

Keywords

ASJC Scopus subject areas

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