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Title: Tailored semiconducting carbon nanotube networks with enhanced thermoelectric properties

Journal Article · · Nature Energy
 [1];  [1];  [2];  [2];  [1];  [1];  [3];  [1];  [4];  [3];  [2];  [1];  [1]
  1. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  2. Korea Advanced Institute of Science and Technology, Daejeon (Republic of Korea)
  3. Univ. of Denver, Denver, CO (United States)
  4. National Renewable Energy Lab. (NREL), Golden, CO (United States); Univ. of Wisconsin, Madison, WI (United States)

Thermoelectric power generation, allowing recovery of part of the energy wasted as heat, is emerging as an important component of renewable energy and energy efficiency portfolios. Although inorganic semiconductors have traditionally been employed in thermoelectric applications, organic semiconductors garner increasing attention as versatile thermoelectric materials. Here we present a combined theoretical and experimental study suggesting that semiconducting single-walled carbon nanotubes with carefully controlled chirality distribution and carrier density are capable of large thermoelectric power factors, higher than 340 μW m-1 K-2, comparable to the best-performing conducting polymers and larger than previously observed for carbon nanotube films. Furthermore, we demonstrate that phonons are the dominant source of thermal conductivity in the networks, and that our carrier doping process significantly reduces the thermal conductivity relative to undoped networks. As a result, these findings provide the scientific underpinning for improved functional organic thermoelectric composites with carbon nanotube inclusions.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1246960
Report Number(s):
NREL/JA-5900-65863
Journal Information:
Nature Energy, Vol. 1; Related Information: Nature Energy; ISSN 2058-7546
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 238 works
Citation information provided by
Web of Science

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Cited By (49)

Recent Advances in Applications of Sorted Single‐Walled Carbon Nanotubes journal May 2019
Carbon-Nanotube-Based Thermoelectric Materials and Devices journal January 2018
Solution-Processing of High-Purity Semiconducting Single-Walled Carbon Nanotubes for Electronics Devices journal July 2018
Conductivity Tuning via Doping with Electron Donating and Withdrawing Molecules in Perovskite CsPbI 3 Nanocrystal Films journal May 2019
Thermoelectric Properties of PEDOT:PSS journal February 2019
Intrinsic and Extrinsically Limited Thermoelectric Transport within Semiconducting Single‐Walled Carbon Nanotube Networks journal February 2019
Recent Advances in n‐Type Thermoelectric Nanocomposites journal February 2019
A Brief Review on Measuring Methods of Thermal Conductivity of Organic and Hybrid Thermoelectric Materials journal June 2019
Scalable and Solid-State Redox Functionalization of Transparent Single-Walled Carbon Nanotube Films for Highly Efficient and Stable Solar Cells journal May 2017
Air-tolerant Fabrication and Enhanced Thermoelectric Performance of n-Type Single-walled Carbon Nanotubes Encapsulating 1,1′-Bis(diphenylphosphino)ferrocene journal July 2016
Surfactant-driven Amphoteric Doping of Carbon Nanotubes journal November 2018
Copper Sulfides: Earth‐Abundant and Low‐Cost Thermoelectric Materials journal April 2019
High cross‐plane thermoelectric performance of carbon nanotube sponge films journal December 2019
Recent Development of Thermoelectric Polymers and Composites journal January 2018
Enhanced Phonon‐Drag Thermopower of Ballistic Semiconducting Single‐Walled Carbon Nanotubes Near the Second Subband Edge journal February 2019
A Novel Way to Enhance the Thermoelectric Efficiency of Carbon Nanotube through Cobaltocene‐decamethyl Cobaltocene Encapsulation journal January 2020
Influence of chemical functionalization on the thermoelectric properties of monodispersed single-walled carbon nanotubes journal January 2018
Thermal conductivity of carbon nanotube networks: a review journal February 2019
Ultrahigh thermoelectric power factor in flexible hybrid inorganic-organic superlattice journal October 2017
Exceptional thermoelectric properties of flexible organic−inorganic hybrids with monodispersed and periodic nanophase journal September 2018
Low-voltage high-performance flexible digital and analog circuits based on ultrahigh-purity semiconducting carbon nanotubes journal May 2019
Thermoelectric properties and performance of flexible reduced graphene oxide films up to 3,000 K journal February 2018
Thermoelectric properties of dispersant-free semiconducting single-walled carbon nanotubes sorted by a flavin extraction method journal January 2019
Chirality-sorted carbon nanotube films as high capacity electrode materials journal January 2018
Enhanced thermoelectric performance of CNT/P3HT composites with low CNT content journal January 2018
Tailoring the framework of organic small molecule semiconductors towards high-performance thermoelectric composites via conglutinated carbon nanotube webs journal January 2018
Electrochemical n-type doping of carbon nanotube films by using supramolecular electrolytes journal January 2018
Wavelength-dependent photoconductivity of single-walled carbon nanotube layers journal January 2019
A practical field guide to thermoelectrics: Fundamentals, synthesis, and characterization journal June 2018
Isotropic Seebeck coefficient of aligned single-wall carbon nanotube films journal December 2018
Enhanced thermoelectric properties of semiconducting carbon nanotube films by UV/ozone treatment journal October 2019
Thermoelectric properties of sorted semiconducting single-walled carbon nanotube sheets journal March 2019
Thermoelectric figure of merit of polymeric systems for low-power generators journal September 2017
Macroscopically aligned carbon nanotubes for flexible and high-temperature electronics, optoelectronics, and thermoelectrics journal December 2019
Science and applications of wafer-scale crystalline carbon nanotube films prepared through controlled vacuum filtration journal March 2019
Will organic thermoelectrics get hot? journal July 2019
Quasi-ballistic carbon nanotube array transistors with current density exceeding Si and GaAs journal September 2016
Compliant and stretchable thermoelectric coils for energy harvesting in miniature flexible devices journal November 2018
Carbon-Based Materials for Thermoelectrics journal July 2018
Thermoelectric Properties of Carbon Nanotubes journal November 2019
Impact of Synthesis Parameters of Multi-Walled Carbon Nanotubes on their Thermoelectric Properties journal October 2019
Carbon Nanotube-Based Organic Thermoelectric Materials for Energy Harvesting journal October 2018
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Thermoelectric properties of sorted semiconducting single-walled carbon nanotube sheets text January 2019
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