Towards a nanostructured thermoelectric generator using ion-track lithography
Koukharenko, E., Li, X., Nandhakumar, I., Frety, N., Beeby, S.P., Cox, D, Tudor, M. J., Schiedt, B, Trautmann, C, Bertsch, A and White, Neil M. (2008) Towards a nanostructured thermoelectric generator using ion-track lithography. Journal of Micromechanics and Microengineering, 18, (10), 104015-[9pp]. (doi:10.1088/0960-1317/18/10/104015).
Full text not available from this repository.
This paper presents the process development towards a new generation of nanostructured thermoelectric generators for power harvesting from small temperature gradients by using a combination of traditional silicon microfabrication techniques, electroplating and submicron ion-track nanolithography. Polyimide nanotemplates with pore diameters ranging from 30 nm to 120 nm were fabricated. Preliminary results from the fabrication of poly(methyl methacrylate) (PMMA)-nanostructured templates are reported. Bi2Te3 nanowires (80 and 120 nm diameters) were electroplated into polyimide ion-track nanotemplates. Bi2Te3 nanowires of a R3 m structure, with preferential orientation in (1 1 0) crystallographic plans, were electroplated. The chemical composition of Bi2Te3 with nearly stoichiometric composition (Bi2.31Te3) was obtained. Homogeneity profiles of the chemical composition were obtained. A fine-grained observed microstructure (6–10 nm) and (1 1 0) crystalline orientation were obtained, which is extremely promising for improving the thermoelectric material properties. The thermoelectric properties of the Bi2Te3-electroplated thin films (Seebeck coefficient α) and electrical resistivity of the Bi2Te3 bundle nanowires were found to be −52 µV K−1 and ~14 MΩ cm, respectively. Polyimide (Kapton foil) and PMMA 950 photoresists were promising materials for the realization of a nanostructured thermoelectric generator on flexible and rigid substrates, respectively.
|Subjects:||Q Science > QC Physics|
|Divisions:||University Structure - Pre August 2011 > School of Chemistry
|Date Deposited:||23 Jun 2010 13:47|
|Last Modified:||01 Jun 2011 05:32|
|Contributors:||Koukharenko, E. (Author)
Li, X. (Author)
Nandhakumar, I. (Author)
Frety, N. (Author)
Beeby, S.P. (Author)
Cox, D (Author)
Tudor, M. J. (Author)
Schiedt, B (Author)
Trautmann, C (Author)
Bertsch, A (Author)
White, Neil M. (Author)
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
Actions (login required)