Strong phonon scattering by layer structured PbSnS2 in PbTe based thermoelectric materials

Jiaqing He; Steven N. Girard; Jin Cheng Zheng; Lidong Zhao; Mercouri G. Kanatzidis; Vinayak P. Dravid

doi:10.1002/adma.201201565

Strong phonon scattering by layer structured PbSnS₂ in PbTe based thermoelectric materials

Jiaqing He^*
, Steven N. Girard
, Jin Cheng Zheng
, Lidong Zhao
, Mercouri G. Kanatzidis
, Vinayak P. Dravid

^*Corresponding author for this work

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

145 Scopus citations

Abstract

The incorporation of PbSnS₂ in PbTe results in a tremendous reduction of the lattice thermal conductivity to 0.8 W/mK at room temperature, a reduction of almost 60% over bulk PbTe. Transmission electron microscopy reveals very high density displacement layers, misfit dislocations, and phase boundaries. Our thermal transport calculations based on modified Debye-Callaway model, well in agreement with the experimental measurements, reveal that the layer structured PbSnS₂ plays an important role in reducing the lattice thermal conductivity.

Original language	English
Pages (from-to)	4440-4444
Number of pages	5
Journal	Advanced Materials
Volume	24
Issue number	32
DOIs	https://doi.org/10.1002/adma.201201565
State	Published - 22 Aug 2012
Externally published	Yes

Keywords

displacement layers
lattice thermal conductivity
phonon scattering
thermoelectric materials
transmission electron microscopy

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10.1002/adma.201201565

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title = "Strong phonon scattering by layer structured PbSnS2 in PbTe based thermoelectric materials",

abstract = "The incorporation of PbSnS2 in PbTe results in a tremendous reduction of the lattice thermal conductivity to 0.8 W/mK at room temperature, a reduction of almost 60\% over bulk PbTe. Transmission electron microscopy reveals very high density displacement layers, misfit dislocations, and phase boundaries. Our thermal transport calculations based on modified Debye-Callaway model, well in agreement with the experimental measurements, reveal that the layer structured PbSnS2 plays an important role in reducing the lattice thermal conductivity.",

keywords = "displacement layers, lattice thermal conductivity, phonon scattering, thermoelectric materials, transmission electron microscopy",

author = "Jiaqing He and Girard, \{Steven N.\} and Zheng, \{Jin Cheng\} and Lidong Zhao and Kanatzidis, \{Mercouri G.\} and Dravid, \{Vinayak P.\}",

year = "2012",

month = aug,

day = "22",

doi = "10.1002/adma.201201565",

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journal = "Advanced Materials",

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T1 - Strong phonon scattering by layer structured PbSnS2 in PbTe based thermoelectric materials

AU - He, Jiaqing

AU - Girard, Steven N.

AU - Zheng, Jin Cheng

AU - Zhao, Lidong

AU - Kanatzidis, Mercouri G.

AU - Dravid, Vinayak P.

PY - 2012/8/22

Y1 - 2012/8/22

N2 - The incorporation of PbSnS2 in PbTe results in a tremendous reduction of the lattice thermal conductivity to 0.8 W/mK at room temperature, a reduction of almost 60% over bulk PbTe. Transmission electron microscopy reveals very high density displacement layers, misfit dislocations, and phase boundaries. Our thermal transport calculations based on modified Debye-Callaway model, well in agreement with the experimental measurements, reveal that the layer structured PbSnS2 plays an important role in reducing the lattice thermal conductivity.

AB - The incorporation of PbSnS2 in PbTe results in a tremendous reduction of the lattice thermal conductivity to 0.8 W/mK at room temperature, a reduction of almost 60% over bulk PbTe. Transmission electron microscopy reveals very high density displacement layers, misfit dislocations, and phase boundaries. Our thermal transport calculations based on modified Debye-Callaway model, well in agreement with the experimental measurements, reveal that the layer structured PbSnS2 plays an important role in reducing the lattice thermal conductivity.

KW - displacement layers

KW - lattice thermal conductivity

KW - phonon scattering

KW - thermoelectric materials

KW - transmission electron microscopy

UR - https://www.scopus.com/pages/publications/84865035881

U2 - 10.1002/adma.201201565

DO - 10.1002/adma.201201565

M3 - 文章

C2 - 22807269

AN - SCOPUS:84865035881

SN - 0935-9648

VL - 24

SP - 4440

EP - 4444

JO - Advanced Materials

JF - Advanced Materials

IS - 32

ER -

Strong phonon scattering by layer structured PbSnS₂ in PbTe based thermoelectric materials

Abstract

Keywords

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