Polymer-Free Carbon Nanotube Thermoelectrics with Improved Charge Carrier Transport and Power Factor

Norton-Baker, Brenna; Ihly, Rachelle; Gould, Isaac E.; Avery, Azure D.; Owczarczyk, Zbyslaw R.; Ferguson, Andrew J.; Blackburn, Jeffrey L.

doi:10.1021/acsenergylett.6b00417

Title: Polymer-Free Carbon Nanotube Thermoelectrics with Improved Charge Carrier Transport and Power Factor

Journal Article · Thu Nov 17 00:00:00 EST 2016 · ACS Energy Letters

DOI:https://doi.org/10.1021/acsenergylett.6b00417· OSTI ID:1337429

Norton-Baker, Brenna ^[1]; Ihly, Rachelle ^[1]; Gould, Isaac E. ^[1]; Avery, Azure D. ^[2]; Owczarczyk, Zbyslaw R. ^[1]; Ferguson, Andrew J. ^[1]; Blackburn, Jeffrey L. ^[1]

Chemistry & Nanoscience Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80401, United States
Department of Physics, Metropolitan State University of Denver, 1201 Fifth Street, Denver, Colorado 80204, United States

Here, semiconducting single-walled carbon nanotubes (s-SWCNTs) have recently attracted attention for their promise as active components in a variety of optical and electronic applications, including thermoelectricity generation. Here we demonstrate that removing the wrapping polymer from the highly enriched s-SWCNT network leads to substantial improvements in charge carrier transport and thermoelectric power factor. These improvements arise primarily from an increase in charge carrier mobility within the s-SWCNT networks because of removal of the insulating polymer and control of the level of nanotube bundling in the network, which enables higher thin-film conductivity for a given carrier density. Ultimately, these studies demonstrate that highly enriched s-SWCNT thin films, in the complete absence of any accompanying semiconducting polymer, can attain thermoelectric power factors in the range of approximately 400 μW m^-1K^-2, which is on par with that of some of the best single-component organic thermoelectrics demonstrated to date.

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Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Office of Workforce Development for Teachers & Scientists (WDTS); USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Science (SC), Workforce Development for Teachers and Scientists (WDTS)

Grant/Contract Number:: AC36-08GO28308

OSTI ID:: 1337429

Alternate ID(s):: OSTI ID: 1347422

Report Number(s):: NREL/JA-5900-66753

Journal Information:: ACS Energy Letters, Journal Name: ACS Energy Letters Vol. 1 Journal Issue: 6; ISSN 2380-8195

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 69 works

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