Solution based synthesis and processing of Sn and Bi doped Cu inf 3 inf SbSe inf 4 inf nanocrystals nanomaterials and ring shaped thermoelectric generators

Y. Liu, G. García, S. Ortega, D. Cadavid, P. Palacios, J. Lu, M. Ibanez, L. Xi, J. De Roo, A. López, S. Márti Sánchez, I. Cabezas, M. De La Mata, Z. Luo, C. Dun, O. Dobrozhan, D. Carroll, W. Zhang, J. Martins, M. Kovalenko, J. Arbiol, G. Noriega, J. Song, P. Wahnón, A. Cabot, Journal of Materials Chemistry A 5 (2016) 2592–2602.

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Journal Article | Published | English
Author
Liu, YuIST Austria ; García, Gregorio; Ortega, Silvia; Cadavid, Doris; Palacios, Pablo; Lu, Jinyu; Ibanez, Maria; Xi, Lili; De Roo, Jonathan; López, Antonio; Márti Sánchez, Sara; Cabezas, Ignasi
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Abstract
Copper-based chalcogenides that comprise abundant, low-cost, and environmental friendly elements are excellent materials for a number of energy conversion applications, including photovoltaics, photocatalysis, and thermoelectrics (TE). In such applications, the use of solution-processed nanocrystals (NCs) to produce thin films or bulk nanomaterials has associated several potential advantages, such as high material yield and throughput, and composition control with unmatched spatial resolution and cost. Here we report on the production of Cu3SbSe4 (CASe) NCs with tuned amounts of Sn and Bi dopants. After proper ligand removal, as monitored by nuclear magnetic resonance and infrared spectroscopy, these NCs were used to produce dense CASe bulk nanomaterials for solid state TE energy conversion. By adjusting the amount of extrinsic dopants, dimensionless TE figures of merit (ZT) up to 1.26 at 673 K were reached. Such high ZT values are related to an optimized carrier concentration by Sn doping, a minimized lattice thermal conductivity due to efficient phonon scattering at point defects and grain boundaries, and to an increase of the Seebeck coefficient obtained by a modification of the electronic band structure with Bi doping. Nanomaterials were further employed to fabricate ring-shaped TE generators to be coupled to hot pipes, which provided 20 mV and 1 mW per TE element when exposed to a 160 °C temperature gradient. The simple design and good thermal contact associated with the ring geometry and the potential low cost of the material solution processing may allow the fabrication of TE generators with short payback times.
Publishing Year
Date Published
2016-12-19
Journal Title
Journal of Materials Chemistry A
Volume
5
Issue
6
Page
2592 - 2602
IST-REx-ID
370

Cite this

Liu Y, García G, Ortega S, et al. Solution based synthesis and processing of Sn and Bi doped Cu inf 3 inf SbSe inf 4 inf nanocrystals nanomaterials and ring shaped thermoelectric generators. Journal of Materials Chemistry A. 2016;5(6):2592-2602. doi:10.1039/C6TA08467B
Liu, Y., García, G., Ortega, S., Cadavid, D., Palacios, P., Lu, J., … Cabot, A. (2016). Solution based synthesis and processing of Sn and Bi doped Cu inf 3 inf SbSe inf 4 inf nanocrystals nanomaterials and ring shaped thermoelectric generators. Journal of Materials Chemistry A, 5(6), 2592–2602. https://doi.org/10.1039/C6TA08467B
Liu, Yu, Gregorio García, Silvia Ortega, Doris Cadavid, Pablo Palacios, Jinyu Lu, Maria Ibanez, et al. “Solution Based Synthesis and Processing of Sn and Bi Doped Cu Inf 3 Inf SbSe Inf 4 Inf Nanocrystals Nanomaterials and Ring Shaped Thermoelectric Generators.” Journal of Materials Chemistry A 5, no. 6 (2016): 2592–2602. https://doi.org/10.1039/C6TA08467B.
Y. Liu et al., “Solution based synthesis and processing of Sn and Bi doped Cu inf 3 inf SbSe inf 4 inf nanocrystals nanomaterials and ring shaped thermoelectric generators,” Journal of Materials Chemistry A, vol. 5, no. 6, pp. 2592–2602, 2016.
Liu Y, García G, Ortega S, Cadavid D, Palacios P, Lu J, Ibanez M, Xi L, De Roo J, López A, Márti Sánchez S, Cabezas I, De La Mata M, Luo Z, Dun C, Dobrozhan O, Carroll D, Zhang W, Martins J, Kovalenko M, Arbiol J, Noriega G, Song J, Wahnón P, Cabot A. 2016. Solution based synthesis and processing of Sn and Bi doped Cu inf 3 inf SbSe inf 4 inf nanocrystals nanomaterials and ring shaped thermoelectric generators. Journal of Materials Chemistry A. 5(6), 2592–2602.
Liu, Yu, et al. “Solution Based Synthesis and Processing of Sn and Bi Doped Cu Inf 3 Inf SbSe Inf 4 Inf Nanocrystals Nanomaterials and Ring Shaped Thermoelectric Generators.” Journal of Materials Chemistry A, vol. 5, no. 6, Royal Society of Chemistry, 2016, pp. 2592–602, doi:10.1039/C6TA08467B.

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