Stretchable Thermoelectric Generators Metallized with Liquid Alloy
Artikel i vetenskaplig tidskrift, 2017
Conventional thermoelectric generators (TEGs) are normally hard, rigid, and flat. However, most objects have curvy surfaces, which require soft and even stretchable TEGs for maximizing efficiency of thermal energy harvesting. Here, soft and stretchable TEGs using conventional rigid Bi2Te3 pellets metallized with a liquid alloy is reported. The fabrication is implemented by means of a tailored layer-by-layer fabrication process. The STEGs exhibit an output power density of 40.6 ?W/cm2 at room temperature. The STEGs are operational after being mechanically stretched-and-released more than 1000 times, thanks to the compliant contact between the liquid alloy interconnects and the rigid pellets. The demonstrated interconnect scheme will provide a new route to the development of soft and stretchable energy-harvesting avenues for a variety of emerging electronic applications.
stretchability
elastomer packaging
liquid alloy
flexibility
interconnect
thermoelectric generator
contact resistance
Författare
Seung Hee Jeong
Uppsala universitet
Francisco Javier Cruz
Uppsala universitet
Si Chen
Chalmers, Mikroteknologi och nanovetenskap, Elektronikmaterial
L. Gravier
University of Applied Sciences and Arts Western Switzerland
Johan Liu
Chalmers, Mikroteknologi och nanovetenskap, Elektronikmaterial
Zhigang Wu
Uppsala universitet
Huazhong University of Science and Technology
Klas H Hjort
Uppsala universitet
Shi Li Zhang
Uppsala universitet
Zhi Bin Zhang
Uppsala universitet
ACS Applied Materials & Interfaces
1944-8244 (ISSN) 1944-8252 (eISSN)
Vol. 9 18 15791-15797Ämneskategorier
Annan materialteknik
Annan elektroteknik och elektronik
Styrkeområden
Materialvetenskap
DOI
10.1021/acsami.7b04752