New Technology for Microfabrication and Testing of a Thermoelectric Device for Generating Mobile Electrical Power
ARMY RESEARCH LAB ADELPHI MD
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We report the results of the fabrication and testing of a thermoelectric power generation module. The module was fabricated using a new flip-chip module assembly technique that is scalable, modular, and results in a low value of contact resistivity less or equal to 105 omega-cm2. It can be used to leverage new advances in thin-film and nanostructured materials for the fabrication of new miniature thermoelectric devices. It may also enable monolithic integration of large devices or tandem arrays of devices on flexible or curved surfaces. Under mild testing, a power of 22 mWcm2 was obtained from small 100 K temperature differences. At higher, more realistic temperature differences, 500 K, where the efficiency of these materials greatly improves, this power density would scale to between 0.5 and 1 Wcm2. These results highlight the excellent potential for the generation and scavenging of electrical power of practical and usable magnitude for remote military applications using thermoelectric power generation technologies.
- Electricity and Magnetism