Strong Phonon Scattering by Layer Structured PbSnS2 in PbTe Based Thermoelectric Materials

Strong Phonon Scattering by Layer Structured PbSnS2 in PbTe Based Thermoelectric Materials

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 boundari...

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Veröffentlicht in:Advanced materials (Weinheim) 2012-08, Vol.24 (32), p.4440-4444
Hauptverfasser: He, Jiaqing, Girard, Steven N., Zheng, Jin-Cheng, Zhao, Lidong, Kanatzidis, Mercouri G., Dravid, Vinayak P.
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Sprache:eng
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displacement layers
lattice thermal conductivity
phonon scattering
thermoelectric materials
transmission electron microscopy
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container_end_page 4444
container_issue 32
container_start_page 4440
container_title Advanced materials (Weinheim)
container_volume 24
creator He, Jiaqing
Girard, Steven N.
Zheng, Jin-Cheng
Zhao, Lidong
Kanatzidis, Mercouri G.
Dravid, Vinayak P.
description 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.
doi_str_mv 10.1002/adma.201201565
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subjects displacement layers
lattice thermal conductivity
phonon scattering
thermoelectric materials
transmission electron microscopy
title Strong Phonon Scattering by Layer Structured PbSnS2 in PbTe Based Thermoelectric Materials
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