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.


elastomer packaging

liquid alloy



thermoelectric generator

contact resistance


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 15791-15797


Annan materialteknik

Annan elektroteknik och elektronik





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