Evaluation of Output Performance of Flexible Thermoelectric Energy Harvester Made of Organic-Inorganic Thermoelectric Films Based on PEDOT:PSS and PVDF Matrix

Yujin Na; Kwi-Il Park

doi:10.3740/MRSK.2023.33.7.295

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2023 Vol.33, Issue 7 Preview Page Next Page

Research Paper

Evaluation of Output Performance of Flexible Thermoelectric Energy Harvester Made of Organic-Inorganic Thermoelectric Films Based on PEDOT:PSS and PVDF Matrix PEDOT:PSS 및 PVDF 기반의 유-무기 열전 필름으로 제작된 플렉서블 열전 에너지 하베스터의 발전 성능 평가

27 July 2023. pp. 295-301

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Abstract

Thermoelectric (TE) energy harvesting, which converts available thermal resources into electrical energy, is attracting significant attention, as it facilitates wireless and self-powered electronics. Recently, as demand for portable/wearable electronic devices and sensors increases, organic-inorganic TE films with polymeric matrix are being studied to realize flexible thermoelectric energy harvesters (f-TEHs). Here, we developed flexible organic-inorganic TE films with p-type Bi_0.5Sb_1.5Te₃ powder and polymeric matrices such as poly(3,4-eethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) and poly(vinylidene fluoride) (PVDF). The fabricated TE films with a PEDOT:PSS matrix and 1 wt% of multi-walled carbon nanotube (MWCNT) exhibited a power factor value of 3.96 µW ‧ m^-1 ‧ K^-2 which is about 2.8 times higher than that of PVDF-based TE film. We also fabricated f-TEHs using both types of TE films and investigated the TE output performance. The f-TEH made of PEDOT:PSS-based TE films harvested the maximum load voltage of 3.4 mV, with a load current of 17.4 µA, and output power of 15.7 nW at a temperature difference of 25 K, whereas the f-TEH with PVDF-based TE films generated values of 0.6 mV, 3.3 µA, and 0.54 nW. This study will broaden the fields of the research on methods to improve TE efficiency and the development of flexible organic-inorganic TE films and f-TEH.

Keywords

thermoelectric

flexible

energy harvester

thermoelectric films

PEDOT:PSS

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Information

Publisher :Materials Research Society of Korea
Publisher(Ko) :한국재료학회
Journal Title :Korean Journal of Materials Research
Journal Title(Ko) :한국재료학회지
Volume : 33
No :7
Pages :295-301
Received Date : 2023-06-29
Revised Date : 2023-07-06
Accepted Date : 2023-07-18
DOI :https://doi.org/10.3740/MRSK.2023.33.7.295

Korean Journal of Materials Research ISSN:1225-0562(Print) 2287-7258(Online) 한국재료학회지

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