Solvent effect induced charge polarity switching from p- to n-type in polyaniline and carbon nanotube hybrid films with a high thermoelectric power factor

Wang, Yizhuo; Dai, Xu; Pan, Jiahao; Wang, Jing; Sun, Xu; Li, Kuncai; Wang, Hong

doi:10.1039/d4ta02790f

J. Mater. Chem. A

2024

DOI: 10.1039/d4ta02790f

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Solvent effect induced charge polarity switching from p- to n-type in polyaniline and carbon nanotube hybrid films with a high thermoelectric power factor

Yizhuo Wang,

Xu Dai,

Jiahao Pan

et al.

Abstract: Understanding and controlling the polarity of organic materials is essential for a broad range of organic electronic applications. It is commonly assumed that charge carrier type of organic hybrid materials...

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Recent advances in preparation, thermoelectric properties, and applications of organic small molecule/SWCNT composites

Liu,

Li,

et al. 2024

Microstructures

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Thermoelectric materials allow for direct conversion between heat and electricity, realizing a facile and effective utilization of waste heat and thermal management. Semiconductive organic small molecules (OSMs) have attracted ever-increasing attention in thermoelectric device fabrication due to their simplicity in synthesis, well-defined molecular structure, low toxicity, and low thermal conductivity (κ ). As a unique one-dimensional (1D) carbon allotrope, single-walled carbon nanotubes (SWCNTs) have excellent structural and electrical properties. Thermoelectric OSM/SWCNT composites with both high conductivity and low thermal conductivity have drawn great attention among researchers and achieved remarkable progress. However, current research fails to give a clear relationship between the structure of small molecules and their thermoelectric performance, and the microscopic mechanisms governing the formation of OSM/SWCNT composites are not well understood as well. These, in all, need further investigation to guide future development in preparing high-performance OSM/SWCNT thermoelectric composites. In this review, we introduce recent advancements in thermoelectric OSM/SWCNT composites, providing a detailed overview of optimization strategies for small molecule dopants. Also summarized in this review article is the design of OSMs from various aspects, including energy level regulation, side chain modification, selection of substituents, etc. Different preparation methods and applications of OSM/SWCNT composites are introduced in detail. Finally, outlooks on the future development of OSM/SWCNT composite thermoelectric materials are pointed out.

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Recent advances in preparation, thermoelectric properties, and applications of organic small molecule/SWCNT composites

Liu,

Li,

et al. 2024

Microstructures

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Solvent effect induced charge polarity switching from p- to n-type in polyaniline and carbon nanotube hybrid films with a high thermoelectric power factor

Abstract: Understanding and controlling the polarity of organic materials is essential for a broad range of organic electronic applications. It is commonly assumed that charge carrier type of organic hybrid materials...

Cited by 1 publication

References 90 publications

Recent advances in preparation, thermoelectric properties, and applications of organic small molecule/SWCNT composites

Recent advances in preparation, thermoelectric properties, and applications of organic small molecule/SWCNT composites

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