Roll type conducting polymer legs for rigid-flexible thermoelectric generator

Teahoon Park, Hanwhuy Lim, Jong Un Hwang, Jongbeom Na, Hyunki Lee, Eunkyoung Kim

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


A roll-type conducting polymer film was explored as a flexible organic p-type thermoelectric leg using poly(3,4-ethylenedioxythiophene) (PEDOT) doped with tosylate. The PEDOT films were prepared through solution casting polymerization and rolled up for a roll-type leg. Due to the high flexibility, the roll-type PEDOT leg enabled easy contact to both top and bottom electrodes. Simulation on the dynamic heat transfer and convective cooling for a vertically roosted rod- and roll-type PEDOT leg showed that the temperature difference (ΔT) between the hot and cold sides of the leg was much higher in the roll than that of the rod. The PEDOT legs were integrated with n-type Bi2Te3 blocks, to give a 36-couple rigid-flexible thermoelectric generator (RF-TEG). The maximum output voltage from the 36-couple RF-TEG under a ΔT of 7.9 K was determined as 36.7 mV along with a high output power of 115 nW. A wearable RF-TEG was prepared upon the combination of the 36-couple RF-TEG with an arm warmer, to afford an output voltage of 10.6 mV, which was generated constantly and steadily from human wrist heat.

Original languageEnglish
Article number074106
JournalAPL Materials
Issue number7
Publication statusPublished - 2017 Jul 1

Bibliographical note

Publisher Copyright:
© 2017 Author(s).

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • General Engineering


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