Significantly enhanced thermoelectric performance in SWCNT films via carrier tuning for high power generation

Sheng, Ming; Wang, Yao; Liu, Chenghao; Xiao, Yu; Zhu, Pengcheng; Deng, Yuan

doi:10.1016/j.carbon.2019.11.057

Cited by 30 publications

(15 citation statements)

References 41 publications

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“…Improving the low electrical conductivity of the HB pencil traces or fabricating compatible n-type FLG would significantly improve the performance of the p-n devices. Sheng et al reported SWCNTs with similar power factors to our FLG samples and successfully made well-matched p- and n-type samples, which resulted in a p-n device with a power output of up to 1.16 μW. The performance of the devices would also be significantly improved with the development of a fabrication processes that would enable thicker TE legs (current legs are ∼100 nm) to be realized.…”

Section: Resultssupporting

confidence: 92%

“…Seebeck coefficient, electrical conductivity, and power factor of (a, c) FLG and (b, d) pencil trace, respectively. (e) Power factor values for the current work plus recently reported carbon-based TE materials and their composites. ,,,− …”

Section: Resultsmentioning

confidence: 57%

“…The FLG traces on paper showed a favorable power factor of 97 μW m –1 K –2 , when compared to recently reported only carbon TE materials produced in more complex synthesis techniques, and even compares favorably to some polymer composites. This is illustrated in Figure e. ,,,− …”

Section: Resultsmentioning

confidence: 92%

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Paper Thermoelectrics by a Solvent-Free Drawing Method of All Carbon-Based Materials

et al. 2021

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As practical interest in the flexible or wearable thermoelectric generators (TEGs) has increased, the demand for the high-performance TEGs based on ecofriendly, mechanically resilient, and economically viable TEGs as alternatives to the brittle inorganic materials is growing. Organic or hybrid thermoelectric (TE) materials have been employed in flexible TEGs; however, their fabrication is normally carried out using wet processing such as spin-coating or screen printing. These techniques require materials dissolved or dispersed in solvents; thus, they limit the substrate choice. Herein, we have rationally designed solvent-free, all carbon-based TEGs dry-drawn on a regular office paper using few-layered graphene (FLG). This technique showed very good TE parameters, yielding a power factor of 97 μW m–1 K–2 at low temperatures. The p-type only device exhibited an output power of up to ∼19.48 nW. As a proof of concept, all carbon-based p-n TEGs were created on paper with the addition of HB pencil traces. The HB pencil exhibited low Seebeck coefficients (−7 μV K–1), and the traces were highly resistive compared to FLG traces, which resulted in significantly lower output power compared to the p-type only TEG. The demonstration of all carbon-based TEGs drawn on paper highlights the potential for future low-cost, flexible, and almost instantaneously created TEGs for low-power applications.

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 57%

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Paper Thermoelectrics by a Solvent-Free Drawing Method of All Carbon-Based Materials

et al. 2021

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“…Table S1 (ESI †) summarizes the preparation and properties of p-and n-type paired TE modules composed of organic or organic/inorganic composites of devices similar to that used in this study. 43,[58][59][60][61][62][63][64][65][66] Recently, TE modules were prepared using the same dopants (benzothienobenzothiophene-charge transfer complex 59 and naphthalene diimide derivatives 60 ) for p-and n-type materials. However, in these systems, effective n-doping with the preparation solvent triethylamine was essential for n-type materials.…”

Section: (A)-(c)) a Visualmentioning

confidence: 99%

Cu-ion-induced n- to p-type switching in organic thermoelectric polyazacycloalkane/carbon nanotubes

et al. 2022

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“…The performance of TEG is determined by the figure of merit (ZT) calculated as follows: ZT = S 2 σT/κ, where S stands for the Seebeck coefficient, σ is the electrical conductivity, κ represents for the thermal conductivity, and T means the absolute temperature. Numerous efforts were devoted to developing TEG by Wang et al [51,52] , Feng et al [53] , and Sheng et al [51][52][53][54] . In a typical work, we developed a flexible pressure sensor which was self-powered by a thin-film TEG [51] , as shown in Figure 11.…”

Section: Thermoelectricsmentioning

confidence: 99%

Recent progress in pressure and temperature tactile sensors: Principle, classification, integration and outlook

Yu¹,

Zhang²,

Deng³

2021

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Tactile sensors have received increasing research interest owing to the broad applications in areas of health monitoring, artificial intelligence, robotics, and prosthetics. The ability to understand and perceive touch and heat is of importance because it helps people to recognize objects, prevent injury, and provide heat information from grasped objects. However, bimodal tactile sensors often suffer from signal interference and complicated fabrication process. Numerous efforts have been undertaken to develop highly independent sensors based on different transduction principles as well as the device integration techniques. Here, strategies for improvement of main performance parameters such as sensitivity, sensing range, hysteresis, response/recovery time, and stability are discussed. A comprehensive overview of important progress in pressure and temperature tactile sensors in recent years is summarized. According to sensor units and transduction principles, temperature and pressure tactile sensors are categorized into two types: dual-parameter sensors and integrated bimodal sensors. Integration of tactile sensors from the viewpoint of power supply, wireless communication, and signal process circuit is given. Finally, challenges and outlook are provided and presented for pressure and temperature tactile sensors.

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Significantly enhanced thermoelectric performance in SWCNT films via carrier tuning for high power generation

Cited by 30 publications

References 41 publications

Paper Thermoelectrics by a Solvent-Free Drawing Method of All Carbon-Based Materials

Paper Thermoelectrics by a Solvent-Free Drawing Method of All Carbon-Based Materials

Cu-ion-induced n- to p-type switching in organic thermoelectric polyazacycloalkane/carbon nanotubes

Recent progress in pressure and temperature tactile sensors: Principle, classification, integration and outlook

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