[C-9] Thermoelectric Devices

[C-9-03] Experimental Demonstration of Spreading Resistance Effect in A Miniatrized Bileg Thermoelectric Generator

〇Motohiro Tomita¹, Tsubasa Kashizaki¹, Takumi Hoshina¹, Shuhei Arai¹, Takeo Matsuki^1,2, Takanobu Watanabe¹ (1. Waseda Univ. (Japan), 2. AIST (Japan))

Presentation style: Online

https://doi.org/10.7567/SSDM.2022.C-9-03

The effect of the spreading resistance on the bileg thermoelectric generator (TEG) was experimentally evaluated. In the bileg-TEG at the μm-scale, the electrical resistance becomes larger than a simple estimate using lumped parameter circuit model, which is caused by the spreading resistance; when a current flows from a narrower leg to a wider leg. Thus, the width of the p- and n-type legs in the bileg-TEG at the μm-scale should be carefully selected.