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- Title
A Free‐Standing High‐Output Power Density Thermoelectric Device Based on Structure‐Ordered PEDOT:PSS.
- Authors
Li, Zaifang; Sun, Hengda; Hsiao, Ching‐Lien; Yao, Yulong; Xiao, Yiqun; Shahi, Maryam; Jin, Yingzhi; Cruce, Alex; Liu, Xianjie; Jiang, Youyu; Meng, Wei; Qin, Fei; Ederth, Thomas; Fabiano, Simone; Chen, Weimin M.; Lu, Xinhui; Birch, Jens; Brill, Joseph W.; Zhou, Yinhua; Crispin, Xavier
- Abstract
Abstract: A free‐standing high‐output power density polymeric thermoelectric (TE) device is realized based on a highly conductive (≈2500 S cm−1) structure‐ordered poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate film (denoted as FS‐PEDOT:PSS) with a Seebeck coefficient of 20.6 µV K−1, an in‐plane thermal conductivity of 0.64 W m−1 K−1, and a peak power factor of 107 µW K−2 m−1 at room temperature. Under a small temperature gradient of 29 K, the TE device demonstrates a maximum output power density of 99 ± 18.7 µW cm−2, which is the highest value achieved in pristine PEDOT:PSS based TE devices. In addition, a fivefold output power is demonstrated by series connecting five devices into a flexible thermoelectric module. The simplicity of assembling the films into flexible thermoelectric modules, the low out‐of‐plane thermal conductivity of 0.27 W m−1 K−1, and free‐standing feature indicates the potential to integrate the FS‐PEDOT:PSS TE modules with textiles to power wearable electronics by harvesting human body's heat. In addition to the high power factor, the high thermal stability of the FS‐PEDOT:PSS films up to 250 °C is confirmed by in situ temperature‐dependent X‐ray diffraction and grazing incident wide angle X‐ray scattering, which makes the FS‐PEDOT:PSS films promising candidates for thermoelectric applications.
- Subjects
THERMOELECTRIC apparatus &; appliances; POWER density; ELECTRIC conductivity; POLYSTYRENE; THERMAL conductivity; THERMAL stability; X-ray scattering
- Publication
Advanced Electronic Materials, 2018, Vol 4, Issue 2, p1
- ISSN
2199-160X
- Publication type
Article
- DOI
10.1002/aelm.201700496