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High Spin Pro-Quinoid Benzo[1,2-c;4,5-c′]bisthiadiazole Conjugated Polymers for High-Performance Solution-Processable Polymer Thermoelectrics AITranslate

Teck Lip Dexter Tam; Gang Wu; Sheau Wei Chien; Shien Fuh Vincent Lim; ShuoWang Yang; Jianwei Xu;
Institute of Materials Research and Engineering (IMRE);Institute of High Performance Computing (IHPC);Institute of Materials Research and Engineering (IMRE);Institute of Materials Research and Engineering (IMRE);Institute of High Performance Computing (IHPC); National University of Singapore
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Publisher: ACS
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Abstract AITranslate

Here, we report the use of two high-spin pro-quinoid benzo[1,2-c;4,5-c′]bisthiadiazole (BBT) polymers for high-performance solution-processable polymer thermoelectrics. Sequential solution-phase doping using FeCl3 as p-dopant results in very high electrical conductivities of over 300 S cm–1, even though these BBT polymers take on face-on orientation. By optimizing the level of doping, we achieved the best thermoelectric performance with an average electrical conductivity of 232.7 ± 23.7 S cm–1, Seebeck coefficient of 49.4 ± 3.6 μV K–1, and power factor of 56.5 ± 4.3 μW m–1 K–2. The importance of polaron/bipolarons delocalization and triplet bipolarons to achieve high electrical conductivity and Seebeck coefficient simultaneously is rationalized.

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DOI：https://doi.org/10.1021/acsmaterialslett.9b00483

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Citation Information:

Here, we report the use of two high-spin pro-quinoid benzo[1,2-c;4,5-c′]bisthiadiazole (BBT) polymers for high-performance solution-processable polymer thermoelectrics. Sequential solution-phase doping using FeCl3 as p-dopant results in very high electrical conductivities of over 300 S cm–1, even though these BBT polymers take on face-on orientation. By optimizing the level of doping, we achieved the best thermoelectric performance with an average electrical conductivity of 232.7 ± 23.7 S cm–1, Seebeck coefficient of 49.4 ± 3.6 μV K–1, and power factor of 56.5 ± 4.3 μW m–1 K–2. The importance of polaron/bipolarons delocalization and triplet bipolarons to achieve high electrical conductivity and Seebeck coefficient simultaneously is rationalized.

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GB/T 7714-2015 [1] Teck Lip Dexter Tam, Gang Wu, Sheau Wei Chien, et al. ACS Materials Letters, 2020(2). DOI:10.1021/acsmaterialslett.9b00483.
MLA [1] Teck Lip Dexter Tam, et al., ACS Materials Letters, no. 2, 2020, https://doi.org/10.1021/acsmaterialslett.9b00483.
APA [1] Teck Lip Dexter Tam, Gang Wu, Sheau Wei Chien, Shien Fuh Vincent Lim, ShuoWang Yang, & Jianwei Xu. (2020). ACS Materials Letters(2). https://doi.org/10.1021/acsmaterialslett.9b00483
IEEE [1] Teck Lip Dexter Tam, Gang Wu, Sheau Wei Chien, Shien Fuh Vincent Lim, ShuoWang Yang, and Jianwei Xu, ACS Materials Letters, no. 2, 2020, doi: 10.1021/acsmaterialslett.9b00483.