Prospects for SiGe thermoelectric generators

Samarelli, A. et al. (2014) Prospects for SiGe thermoelectric generators. Solid-State Electronics, 98, 70 - 74. (doi: 10.1016/j.sse.2014.04.003)

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Thermoelectric materials are one potential technology that could be used for energy harvesting. Here we report results from nanoscale Ge/SiGe heterostructure materials grown on Si substrates designed to enhance the thermoelectric performance over bulk materials at room temperature. The materials and devices are aimed at integrated energy harvesters for autonomous sensing applications. We report Seebeck coefficients up to 279.5 ± 1.2 μV/K at room temperature with electrical conductivities of 77,200 S/m which produce a high power factor of 6.02 ± 0.05 mW m−1 K−2 and a ZT of 0.135 ± 0.074 at room temperature. Methods for microfabricating modules will be described along with the first demonstration of power output from flip-chip bonded SiGe legs.

Item Type:Articles
Additional Information:Selected Papers from {ULIS} 2013 Conference
Keywords:Silicon germanium, thermoelectrics, superlattices
Glasgow Author(s) Enlighten ID:Weaver, Professor Jonathan and Ferre Llin, Dr Lourdes and Dobson, Dr Phil and Zhang, Dr Yuan and Samarelli, Mr Antonio and Paul, Professor Douglas
Authors: Samarelli, A., Ferre Llin, L., Cecchi, S., Frigerio, J., Chrastina, D., Isella, G., Müller, E., Etzelstorfer, T., Stangl, J., Zhang, Y., Weaver, J.M.R., Dobson, P.S., and Paul, D.J.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Research Group:Semiconductor Devices
Journal Name:Solid-State Electronics
ISSN (Online):1879-2405

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
533531Generate Renewable Energy Efficiently using Nanofabricated Silicon (GREEN Silicon.)Douglas PaulSee Collaborators (SEE-COLLAB)UNSPECIFIEDENG - ENGINEERING ELECTRONICS & NANO ENG