Cu_(2)ZnGeSe_(4) Nanocrystals: Synthesis and Thermoelectric Properties

Creators: Ibáñez, Maria; Zamani, Reza; LaLonde, Aaron; Cadavid, Doris; Li, Wenhua; Shavel, Alexey; Arbiol, Jordi; Morante, Joan Ramon; Gorsse, Stéphane; Snyder, G. Jeffrey; Cabot, Andreu

Abstract

A synthetic route for producing Cu_(2)ZnGeSe_(4) nanocrystals with narrow size distributions and controlled composition is presented. These nanocrystals were used to produce densely packed nanomaterials by hot-pressing. From the characterization of the thermoelectric properties of these nanomaterials, Cu_(2)ZnGeSe_(4) is demonstrated to show excellent thermoelectric properties. A very preliminary adjustment of the nanocrystal composition has already resulted in a figure of merit of up to 0.55 at 450 °C.

Additional Information

© 2012 American Chemical Society. Received: December 22, 2011; Published: February 14, 2012. 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. thanks the Spanish MICINN for her Ph.D. 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.

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