A Highly Conductive Conjugated Polyelectrolyte for Flexible Organic Thermoelectrics
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Type
ArticleAuthors
Kee, SeyoungHaque, Azimul
Lee, Yeran
Nguyen, Thanh Luan
Rosas Villalva, Diego
Troughton, Joel
Alshareef, Husam N.

Woo, Han Young
Baran, Derya

KAUST Department
Functional Nanomaterials and Devices Research GroupKAUST Solar Center (KSC)
Material Science and Engineering
Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
KAUST Grant Number
CRG2018-3737.OSR-CRG2018-3737
Date
2020-08-10Online Publication Date
2020-08-10Print Publication Date
2020-09-28Permanent link to this record
http://hdl.handle.net/10754/664621
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Show full item recordAbstract
Organic thermoelectrics have attracted considerable attention owing to their remarkable advantages, including room-temperature power generation, skin-attachable/wearable applications with biocompatibility, and solution-based high-throughput fabrication. Self-doped conjugated polyelectrolytes (CPEs) constitute a promising class of conductive organic materials that are considered potential candidates for organic thermoelectrics. However, the low power factor of CPEs derived from their low electrical conductivity (σ) has been a major drawback in CPE-based thermoelectrics. Herein, we report a strategy for enhancing the thermoelectric performance of CPEs through a post-treatment using aq. H2SO4 solution. The post-treatment increases σ by two orders of magnitude, originating from H2SO4-induced doping accompanying a significant increase in charge carrier concentration. Consequently, a power factor of 3.0 W m‒1 K‒2 is achieved at room temperature. Furthermore, using this highly conductive H2SO4-doped CPE, we developed flexible thermoelectric generators that allow durable power generation under repetitive mechanical bending stresses. Our findings provide insight into developing high-performance and versatile CPEs for next-generation organic thermoelectrics.Citation
Kee, S., Haque, A., Lee, Y., Nguyen, T. L., Rosasvillalva, D., Troughton, J., … Baran, D. (2020). A Highly Conductive Conjugated Polyelectrolyte for Flexible Organic Thermoelectrics. ACS Applied Energy Materials. doi:10.1021/acsaem.0c01213Sponsors
D.B. acknowledges KAUST Solar Center Competitive Fund (CCF) for financial support. H.Y.W. is grateful for the financial support from the National Research Foundation (NRF) of Korea (2017K2A9A2A12000315, 2019R1A2C2085290). This report is based upon work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No. OSR-CRG2018-3737.Publisher
American Chemical Society (ACS)Journal
ACS Applied Energy MaterialsAdditional Links
https://pubs.acs.org/doi/10.1021/acsaem.0c01213ae974a485f413a2113503eed53cd6c53
10.1021/acsaem.0c01213