Journal
NANO LETTERS
Volume 13, Issue 5, Pages 2058-2063Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl400319u
Keywords
Thermoelectric; nanowire; heterostructure; lead telluride; bismuth telluride
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Funding
- Air Force Office of Scientific Research [FA9550-12-1-0061]
- DuPont Young Faculty Award
- NSF/DOE Thermoelectric Partnership [1048616]
- National Science Foundation [CBET-1150948]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1048616, 1150948] Funding Source: National Science Foundation
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We demonstrate the rational solution-phase synthesis of compositional modulated telluride nanowire heterostructures containing lead telluride (PbTe) and bismuth telluride (Bi2Te3). By tuning the ratio between PbTe and Bi2Te3 through adjusting the amount of critical reactants and precursors during the synthesis, the influence of composition on the thermoelectric properties of the nanowire heterostructures has been investigated in hot pressed nanocomposite pellets. Measurements of the thermoelectric properties show strongly reduced thermal conductivity that leads to an enhanced thermoelectric figure of merit (ZT) of 1.2 at 620 K.
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