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Article

Synthesis, Bottom up Assembly and Thermoelectric Properties of Sb-Doped PbS Nanocrystal Building Blocks

1
Departamento de Física, Universidad Nacional de Colombia, Ciudad Universitaria, Bogotá 111321, Colombia
2
Department of Physics, University of South Florida, Tampa, FL 33620, USA
3
Catalonia Institute for Energy Research-IREC, Sant Adrià de Besòs, 08930 Barcelona, Spain
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Am Campus 1, Institute of Science and Technology Austria, 3400 Klosterneuburg, Austria
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Department of Materials Science and Engineering, Faculty of Engineering, Izmir Institute of Technology, Urla, İzmir 35430, Turkey
6
ICREA (Institució Catalana de Recerca i Estudis Avançats), Pg. Lluís Companys 23, 08010 Barcelona, Spain
*
Authors to whom correspondence should be addressed.
Academic Editor: P. Davide Cozzoli
Materials 2021, 14(4), 853; https://doi.org/10.3390/ma14040853
Received: 22 December 2020 / Revised: 4 February 2021 / Accepted: 5 February 2021 / Published: 10 February 2021
(This article belongs to the Special Issue Solid State Materials for Energy Applications)
The precise engineering of thermoelectric materials using nanocrystals as their building blocks has proven to be an excellent strategy to increase energy conversion efficiency. Here we present a synthetic route to produce Sb-doped PbS colloidal nanoparticles. These nanoparticles are then consolidated into nanocrystalline PbS:Sb using spark plasma sintering. We demonstrate that the introduction of Sb significantly influences the size, geometry, crystal lattice and especially the carrier concentration of PbS. The increase of charge carrier concentration achieved with the introduction of Sb translates into an increase of the electrical and thermal conductivities and a decrease of the Seebeck coefficient. Overall, PbS:Sb nanomaterial were characterized by two-fold higher thermoelectric figures of merit than undoped PbS. View Full-Text
Keywords: nanocrystals; thermoelectrics; bottom-up engineering; doping; chalcogenides; lead sulfide nanocrystals; thermoelectrics; bottom-up engineering; doping; chalcogenides; lead sulfide
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MDPI and ACS Style

Cadavid, D.; Wei, K.; Liu, Y.; Zhang, Y.; Li, M.; Genç, A.; Berestok, T.; Ibáñez, M.; Shavel, A.; Nolas, G.S.; Cabot, A. Synthesis, Bottom up Assembly and Thermoelectric Properties of Sb-Doped PbS Nanocrystal Building Blocks. Materials 2021, 14, 853. https://doi.org/10.3390/ma14040853

AMA Style

Cadavid D, Wei K, Liu Y, Zhang Y, Li M, Genç A, Berestok T, Ibáñez M, Shavel A, Nolas GS, Cabot A. Synthesis, Bottom up Assembly and Thermoelectric Properties of Sb-Doped PbS Nanocrystal Building Blocks. Materials. 2021; 14(4):853. https://doi.org/10.3390/ma14040853

Chicago/Turabian Style

Cadavid, Doris, Kaya Wei, Yu Liu, Yu Zhang, Mengyao Li, Aziz Genç, Taisiia Berestok, Maria Ibáñez, Alexey Shavel, George S. Nolas, and Andreu Cabot. 2021. "Synthesis, Bottom up Assembly and Thermoelectric Properties of Sb-Doped PbS Nanocrystal Building Blocks" Materials 14, no. 4: 853. https://doi.org/10.3390/ma14040853

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