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Power Generation Properties and Bending Characteristics of a Flexible Thermoelectric Module Fabricated using PDMS Filling Method

PDMS 충진법을 이용하여 형성한 유연열전모듈의 발전특성과 굽힘특성

  • Han, Kee Sun (Department of Materials Science and Engineering, Hongik University) ;
  • Oh, Tae Sung (Department of Materials Science and Engineering, Hongik University)
  • 한기선 (홍익대학교 공과대학 신소재공학과) ;
  • 오태성 (홍익대학교 공과대학 신소재공학과)
  • Received : 2019.12.06
  • Accepted : 2019.12.26
  • Published : 2019.12.30

Abstract

A flexible thermoelectric module, which consisted of 18 pairs of Bi2Te3-based hot-pressed p-n thermoelectric legs, were processed by filling the module inside with polydimethylsiloxane (PDMS) and removing the top and bottom substrates. Its power generation properties and bending characteristics were measured. With putting the flexible module on the wrist, an open circuit voltage of 2.23 mV and a maximum output power of 1.69 ㎼ were generated during staying still. On the other hand, an open circuit voltage of 3.32 mV and a maximum output power of 3.41 ㎼ were obtained with walking motion. The resistance variation of the module was kept below 1% even after applying 30,000 bending cycles with a bending curvature radius of 25 mm.

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