Flexible screen printed thick film thermoelectric generator with reduced material resistivity

14th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Cao, Z.^1 ; Koukharenko, E.^1 ; Torah, R.N.^1 ; Tudor, J.^1 ; Beeby, S.P.^1

University of Southampton, United Kingdom^1

关键词: Cold isostatic pressing;    Flexible polyimide substrate;    Material resistivity;    Printed materials;    Screen printing technology;    Screen-printed thick films;    Thermo-Electric materials;    Thermoelectric generators;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/557/1/012016/pdf
DOI  :  10.1088/1742-6596/557/1/012016

来源: IOP

【 摘 要 】

This work presents a flexible thick-film Bismuth Tellurium/Antimony Tellurium (BiTe/SbTe) thermoelectric generator (TEG) with reduced material resistivity fabricated by screen printing technology. Cold isostatic pressing (CIP) was introduced to lower the resistivity of the printed thermoelectric materials. The Seebeck coefficient (α) and the resistivity (ρ) of printed materials were measured as a function of applied pressure. A prototype TEG with 8 thermocouples was fabricated on flexible polyimide substrate. The dimension of a single printed element was 20 mm × 2 mm × 78.4 pm. The coiled-up prototype produced a voltage of 36.4 mV and a maximum power of 40.3 nW from a temperature gradient of 20 °C.