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Stabilizing the Optimal Carrier Concentration for High Thermoelectric Efficiency
Author(s) -
Pei Yanzhong,
LaLonde Aaron D.,
Heinz Nicholas A.,
Shi Xiaoya,
Iwanaga Shiho,
Wang Heng,
Chen Lidong,
Snyder G. Jeffrey
Publication year - 2011
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201103153
Subject(s) - materials science , thermoelectric effect , degeneracy (biology) , range (aeronautics) , thermoelectric materials , atmospheric temperature range , optoelectronics , engineering physics , nanotechnology , condensed matter physics , thermodynamics , composite material , bioinformatics , thermal conductivity , physics , engineering , biology
The band structure of PbTe can be manipulated by alloying with MgTe to control the band degeneracy. This is used to stabilize the optimal carrier concentration, making it less temperature dependent, demonstrating a new strategy to improve overall thermoelectric efficiency over a broad temperature range.