Journal
NANOSCALE
Volume 5, Issue 16, Pages 7290-7296Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3nr01875j
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Funding
- NSF CMMI [0954717]
- DOE STTR [DE-SC0003347]
- NSF DMR [0213574]
- DoE EFRC program, an Energy Frontier Research Center (EFRC) [DE-SC0001085]
- U.S. DOE Office of Basic Energy Sciences
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0213574] Funding Source: National Science Foundation
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [0954717] Funding Source: National Science Foundation
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The thermoelectric (TE) performance of films of colloidal lead selenide (PbSe) quantum dots (QDs) with metal-chalcogenide complex ligands is seen to change with QD size and temperature. Films of smaller QDs have higher Seebeck coefficient magnitudes, indicating stronger quantum confinement, and lower electrical and thermal conductivities. The thermoelectric figure of merit ZT is similar to 0.5 at room temperature and increases with temperature to 1.0-1.37 at similar to 400 K, where it is larger for smaller QD films. This is better than previous results for solution-prepared QD TE materials at these elevated temperatures.
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