A solution-processed n-type conducting polymer with ultrahigh conductivity

Tang, Haoran; Liang, Yuanying; Liu, Chunchen; Hu, Zhicheng; Deng, Yi‐Fei; Guo, Han; Yu, Zi‐Di; Song, Ao; Zhao, Haiyang; Zhao, Duokai; Zhang, Yuan‐Zhu; Guo, Xugang; Pei, Jian; Ma, Yan; Cao, Yong; Huang, Fei

doi:10.1038/s41586-022-05295-8

Cited by 185 publications

(199 citation statements)

References 57 publications

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“…6,[10][11][12][13] In 2021, Guo et al 14 reported a novel widely applicable transition metal-catalyzed n-doping methodology, which could offer new opportunities in n-doping organic TE materials. Recently, Tang et al 15 reported a solution-processed n-type conducting polymer with a breakthrough room-temperature conductivity reaching 2000 S cm −1 . To date, there are few conjugated polymers or small molecules with reported PFs over 100 mW m −1 K −2 owing to their relatively low electrical conductivities.…”

Section: Introductionmentioning

confidence: 99%

Giant power factor and high air stability in an n-type metal–organic charge-transfer complex

Zhang

et al. 2022

J. Mater. Chem. A

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Section: Introductionmentioning

confidence: 99%

Giant power factor and high air stability in an n-type metal–organic charge-transfer complex

Zhang

et al. 2022

J. Mater. Chem. A

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“…Thus, how to significantly improve the stability of doped π-CPs by the ion-exchange doping method should be emphasized. In addition, developing novel π-CPs without the need for extrinsic doping, such as self-doped π-conjugated polyelectrolytes 121 and in situ reductively n-doped poly(benzodifurandione) (PBFDO), 122 should be stressed due to their better stability under both ambient environment and higher temperatures.…”

Section: Strengthening Thermoelectric Performancementioning

confidence: 99%

Strategic Insights into Semiconducting Polymer Thermoelectrics by Leveraging Molecular Structures and Chemical Doping

2022

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Thermoelectric (TE) materials can realize the direct transformation between heat and electricity, thereby facilitating the recycling of waste heat. Semiconducting π-conjugated polymers (π-CPs) have been largely explored as organic TE materials thanks to the facile molecular tunability of their electronic properties, their room-temperature solution-processability, their intrinsic low thermal conductivity, and their outstanding mechanical flexibility. In this Focus Review, we describe two key strategieschemical doping and structural tailoringin polymeric TEs for strengthening TE power factors of π-CPs. First, the doping mechanisms are unraveled by a sequential process of charge transfer and free carrier release, followed by the introduction of various doping methods for enhancing the chemical doping. Second, the design principles for polymeric structures including the π-backbone and side-chain engineering are presented. Third, supplementary strategies such as polymer chain alignment and construction of polymer blends are identified. Finally, the existing prime obstacles to future development are discussed and an outlook on feasible solutions to resolving them is provided.

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“…Achieving a stable, highly conductive n-doped organic semiconductor has considerably been more difficult than for p-type systems, although very recently Tang et al have demonstrated a high performing n-type polymer, poly(benzodifurandione) (PBFDO), with r max > 2000 S cm À1 that could potentially close the gap between zT values of n-and p-type materials. 54 One of the challenges for n-type systems is the small number of available electron-withdrawing building blocks that also exhibit stable electron transport characteristics. 55 For stable transport in the doped state, the acceptor moiety in the organic semiconductor should have a sufficiently high electron affinity (EA), which translates to a low-lying energy level of the lowest unoccupied molecular orbital (LUMO), to avoid de-doping oxidation reactions in ambient air.…”

Section: B N-type Thermoelectric Materials For Tegsmentioning

confidence: 99%

Solution processed organic thermoelectric generators as energy harvesters for the Internet of Things

Pataki

Rossi

Caironi

2022

Applied Physics Letters

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Organic thermoelectric generators (TEGs) are a prospective class of versatile energy-harvesters that can enable the capture of low-grade heat and provide power to the growing number of microelectronic devices and sensors in the Internet of Things. The abundance, low-toxicity, and tunability of organic conducting materials along with the scalability of the fabrication techniques promise to culminate in a safe, low-cost, and adaptable device template for a wide range of applications. Despite recent breakthroughs, it is generally recognized that significant advances in n-type organic thermoelectric materials must be made before organic TEGs can make a real impact. Yet, in this perspective, we make the argument that to accelerate progress in the field of organic TEGs, future research should focus more effort into the design and fabrication of application-oriented devices, even though materials have considerable room for improvement. We provide an overview of the best solution-processable organic thermoelectric materials, design considerations, and fabrication techniques relevant for application-oriented TEGs, followed by our perspective on the insight that can be gained by pushing forward with device-level research despite suboptimal materials.

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A solution-processed n-type conducting polymer with ultrahigh conductivity

Cited by 185 publications

References 57 publications

Giant power factor and high air stability in an n-type metal–organic charge-transfer complex

Giant power factor and high air stability in an n-type metal–organic charge-transfer complex

Strategic Insights into Semiconducting Polymer Thermoelectrics by Leveraging Molecular Structures and Chemical Doping

Solution processed organic thermoelectric generators as energy harvesters for the Internet of Things

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