Thermoelectric Behavior of Segregated-Network Polymer Nanocomposites

Yu, Choongho; Kim, Yeon Seok; Kim, Dasaroyong; Grunlan, Jaime C.

doi:10.1021/nl900263d

Cited by 44 publications

(70 citation statements)

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“…Choongho et al have devoted several papers [55,56,57,58] to investigate the influence of carbon nanotubes on the thermoelectric performance of a polymer matrix. They started by studying composites of carbon nanotube (CNT) and poly(vinyl acetate) (PVAc) from aqueous solutions [55].…”

Section: Improvement Of the Figure Of Merit Using Polymer Compositesmentioning

confidence: 99%

“…They started by studying composites of carbon nanotube (CNT) and poly(vinyl acetate) (PVAc) from aqueous solutions [55]. The highest thermoelectric performance was attained at a 20 wt% content of CNTs, with an electrical conductivity of 48 S·cm − 1 , thermal conductivity of 0.34 W·m − 1 ·K − 1 and a thermoelectric figure of merit larger than 6 × 10 − 3 at room temperature.…”

Section: Improvement Of the Figure Of Merit Using Polymer Compositesmentioning

confidence: 99%

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Review on Polymers for Thermoelectric Applications

2014

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In this review, we report the state-of-the-art of polymers in thermoelectricity. Classically, a number of inorganic compounds have been considered as the best thermoelectric materials. Since the prediction of the improvement of the figure of merit by means of electronic confinement in 1993, it has been improved by a factor of 3–4. In the mean time, organic materials, in particular intrinsically conducting polymers, had been considered as competitors of classical thermoelectrics, since their figure of merit has been improved several orders of magnitude in the last few years. We review here the evolution of the figure of merit or the power factor during the last years, and the best candidates to compete with inorganic materials. We also outline the best polymers to substitute classical thermoelectric materials and the advantages they present in comparison with inorganic systems.

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Section: Improvement Of the Figure Of Merit Using Polymer Compositesmentioning

confidence: 99%

Section: Improvement Of the Figure Of Merit Using Polymer Compositesmentioning

confidence: 99%

Review on Polymers for Thermoelectric Applications

2014

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“…Figures 3(b) and 3(c) show the Seebeck coefficients for 3 and 5 sheets of metal-deposited BP connected in series, respectively. The Seebeck coefficient is related to the transport of energetic charged particles, whereas the electrical conductivity is related to the transport of all mobile charges [26]. In this study, the observed ( ) values were negative, indicating that the majority of carriers were electrons.…”

Section: Electrical Resistivity Studiesmentioning

confidence: 53%

Fabrication of Metal Alloy‐Deposited Flexible MWCNT Buckypaper for Thermoelectric Applications

Liu

Miao

Saravanan

et al. 2013

Journal of Nanomaterials

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We report the fabrication of a flexible network of multiwall carbon nanotubes (MWCNTs) known as buckypaper (BP) for thermoelectric (TE) applications. A thermal evaporation method was used to deposit TE metal alloys onto the BP. The TE properties were improved primarily by increasing the Seebeck coefficient values (50 and 75 μV/K) and the electrical conductivity by approximately 10 000 S/m. High-temperature resistivity studies were performed to confirm the semiconductivity of buckypaper. Variations in resistivity were observed to be the result of the metal alloys coated on the BP surface. We also demonstrated that a substantial increase in the Seebeck coefficient values can be obtained by connecting 3 and 5 layers of metal-deposited BP in series, thereby enhancing the TE efficiency of MWCNT-based BP for application in thermoelectric devices.

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“…The recent studies on embedded TE devices use bismuth telluride (Bi 2 Te 3 ) as TE material [4]. Bi-and Te-based state-of-the-art TE materials have high figure of merit at room temperatures, but these materials are expensive and toxic, and are not CMOS-compatible [5]. Silicon nanowire (Si-NW)-based TEGs have also been investigated but have lower efficiencies [6].…”

Section: Introductionmentioning

confidence: 99%

Silicon Nanowire Arrays Based On-Chip Thermoelectric Generators

Lee

Brown

Kumar

2015

IEEE Trans. Compon., Packag. Manufact. Technol.

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Thermoelectric generators (TEGs) can improve the net power consumption of electronic packages by generating power from the chip waste heat. In this paper, a 3-D computational model of electronic package with silicon nanowire (Si-NW)-based embedded TEGs has been developed and the effect of crucial geometric parameters, contact resistances, and thermal properties, such as pitch length and length of Si-NWs, the electrical contact resistivity at Si-NW interface, thermal contact resistivity at TEG-package interface, and filling material thermal conductivity on power generation, has been evaluated. The analysis has shown how modifying some crucial parameters from their current values in different experimental studies affect power generation, e.g., decreasing the pitch length from 400 to 200 nm doubled the power generation, increasing the Si-NW length from 1 to 8 μm increased power generation by a factor of three and decreasing contact resistivity by one order of magnitude from 1.0×10 −11 · m 2 enhanced the power generation by a factor of two. This paper has estimated the energy conversion efficiency of 0.15% for 8-μm long Si-NWs using the best thermoelectric properties available from different experimental studies. Finally, performance of Si-NW-based TEG has been compared against the Bi 2 Te 3 superlattice-based TEGs and the crucial parameters of Si-NW TEGs have been identified which should be the focus of the future studies.Index Terms-Contact resistance, energy harvesting, silicon nanowire (Si-NW), thermoelectric generator (TEG), waste heat.

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Thermoelectric Behavior of Segregated-Network Polymer Nanocomposites

Cited by 44 publications

References 0 publications

Review on Polymers for Thermoelectric Applications

Review on Polymers for Thermoelectric Applications

Fabrication of Metal Alloy‐Deposited Flexible MWCNT Buckypaper for Thermoelectric Applications

Silicon Nanowire Arrays Based On-Chip Thermoelectric Generators

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