Composition control and thermoelectric properties of quaternary chalcogenide nanocrystals: The case of stannite Cu2CdSnSe4

M. Ibáñez, D. Cadavid, R. Zamani, N. García Castelló, V. Izquierdo Roca, W. Li, A. Fairbrother, J. Prades, A. Shavel, J. Arbiol, A. Pérez Rodríguez, J. Morante, A. Cabot, Chemistry of Materials 24 (2012) 562–570.

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Journal Article | Published | English
Author
Ibanez Sabate, MariaIST Austria ; Cadavid, Doris; Zamani, Reza; García Castelló, Nuria; Izquierdo Roca, Victora; Li, Wenhua; Fairbrother, Andrew; Prades, Joan; Shavel, Alexey; Arbiol, Jordi; Pérez Rodríguez, Alejandro; Morante, Joan
All
Abstract
A high-yield and upscalable colloidal synthesis route for the production of quaternary I 2-II-IV-VI 4 nanocrystals, particularly stannite Cu 2+xCd 1-xSnSe 4, with narrow size distribution and precisely controlled composition is presented. It is also shown here how the diversity of valences in the constituent elements allows an effective control of their electrical conductivity through the adjustment of the cation ratios. At the same time, while the crystallographic complexity of quaternary chalcogenides is associated with intrinsically low thermal conductivities, the reduction of the lattice dimensions to the nanoscale further reduces the materials thermal conductivity. In the specific case of the stannite crystal structure, a convenient slab distribution of the valence band maximum states permits a partial decoupling of the p-type electrical conductivity from both the Seebeck coefficient and the thermal conductivity. Combining these features, we demonstrate how an initial optimization of the nanocrystals Cd/Cu ratio allowed us to obtain low-temperature solution-processed materials with ZT values up to 0.71 at 685 K.
Publishing Year
Date Published
2012-01-31
Journal Title
Chemistry of Materials
Acknowledgement
This work was supported by the Spanish MICINN Projects MAT2008-05779, MAT2008-03400-E/MAT, MAT2010-15138, ENE2008-03277-E/CON, CSD2009-00050. and CSD2009-00013. M.I. and N.G.-C. thank the Spanish MICINN for the PhD grant. J.A. and R.Z. also acknowledge Generalitat de Catalunya 2009-SGR-770 and XaRMAE. A.C. is thankful for financial support through the Ramon y Cajal program of the Spanish MICINN. N.G.-C. and J.D.P. are thankful for the computer resources, technical expertise and assistance provided by the Barcelona Supercomputing Center - Centro Nacional de Supercomputación.
Volume
24
Issue
3
Page
562 - 570
IST-REx-ID
339

Cite this

Ibáñez M, Cadavid D, Zamani R, et al. Composition control and thermoelectric properties of quaternary chalcogenide nanocrystals: The case of stannite Cu2CdSnSe4. Chemistry of Materials. 2012;24(3):562-570. doi:10.1021/cm2031812
Ibáñez, M., Cadavid, D., Zamani, R., García Castelló, N., Izquierdo Roca, V., Li, W., … Cabot, A. (2012). Composition control and thermoelectric properties of quaternary chalcogenide nanocrystals: The case of stannite Cu2CdSnSe4. Chemistry of Materials, 24(3), 562–570. https://doi.org/10.1021/cm2031812
Ibáñez, Maria, Doris Cadavid, Reza Zamani, Nuria García Castelló, Victora Izquierdo Roca, Wenhua Li, Andrew Fairbrother, et al. “Composition Control and Thermoelectric Properties of Quaternary Chalcogenide Nanocrystals: The Case of Stannite Cu2CdSnSe4.” Chemistry of Materials 24, no. 3 (2012): 562–70. https://doi.org/10.1021/cm2031812.
M. Ibáñez et al., “Composition control and thermoelectric properties of quaternary chalcogenide nanocrystals: The case of stannite Cu2CdSnSe4,” Chemistry of Materials, vol. 24, no. 3, pp. 562–570, 2012.
Ibáñez M, Cadavid D, Zamani R, García Castelló N, Izquierdo Roca V, Li W, Fairbrother A, Prades J, Shavel A, Arbiol J, Pérez Rodríguez A, Morante J, Cabot A. 2012. Composition control and thermoelectric properties of quaternary chalcogenide nanocrystals: The case of stannite Cu2CdSnSe4. Chemistry of Materials. 24(3), 562–570.
Ibáñez, Maria, et al. “Composition Control and Thermoelectric Properties of Quaternary Chalcogenide Nanocrystals: The Case of Stannite Cu2CdSnSe4.” Chemistry of Materials, vol. 24, no. 3, American Chemical Society, 2012, pp. 562–70, doi:10.1021/cm2031812.

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