Conjugated Polymers as Thermoelectric Materials

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Applications".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 2593

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College of Materials Science and Engineering, Shenzhen University, Shenzhen 518055, China
Interests: polymer chemistry; thermoelectronic; conjugated polymers; organic optoelectronic materials
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Dear Colleagues,

The ever-growing energy consumption and increasingly severe environmental issues have gained extensive attention in recent years. To overcome the coming energy crisis, the exploration of sustainable and eco-friendly energy resources has shown considerable significance. Thermoelectric technology is considered to be a sustainable solution to meet global energy challenges by harvesting electricity from waste heat, and has therefore become of interest in recent years. The thermoelectric performance is exponentially growing, and a Special Issue on the recent advances in thermoelectric strategies is timely. The aim of this Special Issue is to publish significant developments in the area of thermoelectrics based on advanced thermoelectric techniques, including state-of-the-art synthesis approaches, computational achievements, and advanced techniques for the characterization of both structures and materials. Furthermore, this Special Issue also focuses on advanced micro- and nanotechnology for fabricating thermoelectric devices with novel designs for various applications with high performance and stability, such as miniature device assembly and flexible/wearable thermoelectric generators. The Special Issue will act as a critical platform for thermoelectrics, and in particular will establish an intrinsic link between these newly developed strategies and the outstanding performance achieved.

Dr. Chengjun Pan
Guest Editor

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Keywords

  • thermoelectric
  • material
  • device
  • fabrication
  • calculation
  • micro- and nanotechnology
  • miniature device assembly
  • flexible/wearable thermoelectric generators

Published Papers (1 paper)

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Research

10 pages, 2374 KiB  
Article
Backbone Effects on the Thermoelectric Properties of Ultra-Small Bandgap Conjugated Polymers
by Dexun Xie, Jing Xiao, Quanwei Li, Tongchao Liu, Jinjia Xu and Guang Shao
Polymers 2021, 13(15), 2486; https://doi.org/10.3390/polym13152486 - 28 Jul 2021
Cited by 3 | Viewed by 2078
Abstract
Conjugated polymers with narrower bandgaps usually induce higher carrier mobility, which is vital for the improved thermoelectric performance of polymeric materials. Herein, two indacenodithiophene (IDT) based donor–acceptor (D-A) conjugated polymers (PIDT-BBT and PIDTT-BBT) were designed and synthesized, both of which exhibited low-bandgaps. PIDTT-BBT [...] Read more.
Conjugated polymers with narrower bandgaps usually induce higher carrier mobility, which is vital for the improved thermoelectric performance of polymeric materials. Herein, two indacenodithiophene (IDT) based donor–acceptor (D-A) conjugated polymers (PIDT-BBT and PIDTT-BBT) were designed and synthesized, both of which exhibited low-bandgaps. PIDTT-BBT showed a more planar backbone and carrier mobility that was two orders of magnitude higher (2.74 × 10−2 cm2V−1s−1) than that of PIDT-BBT (4.52 × 10−4 cm2V−1s−1). Both exhibited excellent thermoelectric performance after doping with 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane, where PIDTT-BBT exhibited a larger conductivity (0.181 S cm−1) and a higher power factor (1.861 μW m−1 K−2) due to its higher carrier mobility. The maximum power factor of PIDTT-BBT reached 4.04 μW m−1 K−2 at 382 K. It is believed that conjugated polymers with a low bandgap are promising in the field of organic thermoelectric materials. Full article
(This article belongs to the Special Issue Conjugated Polymers as Thermoelectric Materials)
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