Subtle Roles of Sb and S in Regulating the Thermoelectric Properties of N‐Type PbTe to High Performance

Subtle Roles of Sb and S in Regulating the Thermoelectric Properties of N‐Type PbTe to High Performance

A high ZT (thermoelectric figure of merit) of ≈1.4 at 900 K for n‐type PbTe is reported, through modifying its electrical and thermal properties by incorporating Sb and S, respectively. Sb is confirmed to be an amphoteric dopant in PbTe, filling Te vacancies at low doping levels (

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Veröffentlicht in:Advanced energy materials 2017-09, Vol.7 (18), p.n/a
Hauptverfasser: Tan, Gangjian, Stoumpos, Constantinos C., Wang, Si, Bailey, Trevor P., Zhao, Li‐Dong, Uher, Ctirad, Kanatzidis, Mercouri G.
Format: Artikel
Sprache:eng
Schlagworte:
Antimony
Carrier mobility
Current carriers
doping
Electrical resistivity
Electron transport
Figure of merit
Intermetallic compounds
Lattice vacancies
Lead base alloys
Lead tellurides
n‐type PbTe
Point defects
Scattering
Thermal conductivity
Thermodynamic properties
Thermoelectric materials
thermoelectrics
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Zusammenfassung:A high ZT (thermoelectric figure of merit) of ≈1.4 at 900 K for n‐type PbTe is reported, through modifying its electrical and thermal properties by incorporating Sb and S, respectively. Sb is confirmed to be an amphoteric dopant in PbTe, filling Te vacancies at low doping levels (
ISSN:1614-6832
1614-6840
DOI:10.1002/aenm.201700099