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Issue 13, 2012
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Controllable synthesis and thermoelectric transport properties of binary-phased PbTe/PbSe nanocrystals

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Abstract

Hierarchical PbTe/PbSe materials with both well-defined primary microstructures and well-ordered secondary nanostructures have been fabricated via a facile solvothermal method. The crystallinity, morphology, structural characteristics, and compositions of as-prepared PbTe/PbSe materials are carefully studied. The obtained hierarchical binary-phased PbTe/PbSe micropeonies present high electrical conductivity and thermopower (Seebeck coefficient) in the temperature range of 300–600 K compared with the pure PbTe nanocrystals with the sizes less than 100 nm. Moreover, the morphology and properties of the composite can be tuned by adjusting the ratio of PbTe and PbSe. These delicately designed PbSe/PbTe nanoscale architectures offer tunable compositions and nano-interfaces in PbSe/PbTe heterostructures, which are the critical factors in controlling the thermoelectrical properties for applications in thermoelectric devices.

Graphical abstract: Controllable synthesis and thermoelectric transport properties of binary-phased PbTe/PbSe nanocrystals

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Supplementary files

Article information


Submitted
30 Jan 2012
Accepted
11 Apr 2012
First published
11 Apr 2012

CrystEngComm, 2012,14, 4461-4466
Article type
Paper

Controllable synthesis and thermoelectric transport properties of binary-phased PbTe/PbSe nanocrystals

R. Jin, G. Chen, J. Pei, J. Sun and Q. Wang, CrystEngComm, 2012, 14, 4461
DOI: 10.1039/C2CE25137J

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