Tuning Counterion Chemistry to Reduce Carrier Localization in Doped Thermoelectric Carbon Nanotube Networks

Murrey, Tucker L.; Aubry, Taylor J.; Ruiz, Omar León; Thurman, Kira A.; Eckstein, Klaus H.; Doud, Evan A.; Stauber, Julia M.; Spokoyny, Alexander M.; Schwartz, Benjamin J.; Hertel, Tobias; Blackburn, Jeff; Ferguson, Andrew J.

doi:10.2139/ssrn.4287840

Cited by 3 publications

(12 citation statements)

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“…[13] By analyzing the doping-dependent S-𝜎 data pairs, it is found that the molecularly doped s-SWCNTs show localized (hopping-like) and localized (metal-like) transport at low and high charge carrier concentrations. [47,96,191] Importantly, in a very recent report, the same group can tune the counterion-SWCNT distance by using dopants of icosahedral dodecaborane (DDB) clusters grafted with different ether-linked fluorinated benzyl moieties. [96] A large counterion-SWCNT distance and reduced coulombic binding energy efficiently improve the extent of carrier delocalization at the low carrier concentration range.…”

Section: Thermoelectricsmentioning

confidence: 99%

“…[47,96,191] Importantly, in a very recent report, the same group can tune the counterion-SWCNT distance by using dopants of icosahedral dodecaborane (DDB) clusters grafted with different ether-linked fluorinated benzyl moieties. [96] A large counterion-SWCNT distance and reduced coulombic binding energy efficiently improve the extent of carrier delocalization at the low carrier concentration range. [96] As a result, doping of the s-SWCNTs with one of the DDB-based dopants (DDB-F 72 ) enables a record-high thermoelectric power factor of sorted SWCNTs of 917 μW m −1 K −2 .…”

Section: Thermoelectricsmentioning

confidence: 99%

“…Semi-Fe (TFSI) 3 12 734 60 --2020 [ 199] RN02 Semi-Salt-ether complex −233 30.4 164 --2020 [ 200] CoMoCAT (6,5) Ttmgb --≈ 30 --2020 [ 192] RN220 [ 201] LV Semi-F4TCNQ ≈50 ≈700 138 --2021 [ 142] IsoNanotube Semi-TBD −153 ----2022 [ 108] PT Semi-DDB-F 72 ≈80 >1000 917 --2023 [96] a) In the column of dopant: the SWCNTs might be covalently functionalized.…”

Section: Timesnanomentioning

confidence: 99%

“…[ 95 ] Annealing of pristine SWCNT films with MoO x on the glass causes a decreased work function from 4.86 to 5.4 eV. Recently, dodecaborane (DBB)‐based clusters have been utilized for p‐doping of s‐SWCNTs [ 96 ] The electron affinity and dopant size of this type of dopants can be tuned by the moieties on the benzyloxy functional groups.…”

Section: Molecular Doping Of Swcntsmentioning

confidence: 99%

“…[ 96 ] A large counterion‐SWCNT distance and reduced coulombic binding energy efficiently improve the extent of carrier delocalization at the low carrier concentration range. [ 96 ] As a result, doping of the s‐SWCNTs with one of the DDB‐based dopants (DDB‐F 72 ) enables a record‐high thermoelectric power factor of sorted SWCNTs of 917 µW m −1 K −2 . This successfully demonstrates the power of tuning counterion chemistry on improving the charge delocalization of doped s‐SWCNTs.…”

Section: Applications Of Sorted and Doped Swcntsmentioning

confidence: 99%

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Molecular Doping Modulation and Applications of Structure‐Sorted Single‐Walled Carbon Nanotubes: A Review

Liu,

Zhao,

Kang

et al. 2023

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Single‐walled carbon nanotubes (SWCNTs) that have a reproducible distribution of chiralities or single chirality are among the most competitive materials for realizing post‐silicon electronics. Molecular doping, with its non‐destructive and fine‐tunable characteristics, is emerging as the primary doping approach for the structure‐controlled SWCNTs, enabling their eventual use in various functional devices. This review provides an overview of important advances in the area of molecular doping of structure‐controlled SWCNTs and their applications. The first part introduces the underlying physical process of molecular doping, followed by a comprehensive survey of the commonly used dopants for SWCNTs to date. Then, it highlights how the convergence of molecular doping and structure‐sorting strategies leads to significantly improved functionality of SWCNT‐based field‐effect transistor arrays, transparent electrodes in optoelectronics, thermoelectrics, and many emerging devices. At last, several challenges and opportunities in this field are discussed, with the hope of shedding light on promoting the practical application of SWCNTs in future electronics.

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Section: Thermoelectricsmentioning

confidence: 99%

Section: Thermoelectricsmentioning

confidence: 99%

Section: Timesnanomentioning

confidence: 99%

Section: Molecular Doping Of Swcntsmentioning

confidence: 99%

Section: Applications Of Sorted and Doped Swcntsmentioning

confidence: 99%

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Molecular Doping Modulation and Applications of Structure‐Sorted Single‐Walled Carbon Nanotubes: A Review

Liu,

Zhao,

Kang

et al. 2023

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Boosting thermoelectric performance of single-walled carbon nanotubes-based films through rational triple treatments

Liu,

Shi,

et al. 2024

Nat Commun

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Single-walled carbon nanotubes (SWCNTs)-based thermoelectric materials, valued for their flexibility, lightweight, and cost-effectiveness, show promise for wearable thermoelectric devices. However, their thermoelectric performance requires significant enhancement for practical applications. To achieve this goal, in this work, we introduce rational “triple treatments” to improve the overall performance of flexible SWCNT-based films, achieving a high power factor of 20.29 µW cm−1 K−2 at room temperature. Ultrasonic dispersion enhances the conductivity, NaBH4 treatment reduces defects and enhances the Seebeck coefficient, and cold pressing significantly densifies the SWCNT films while preserving the high Seebeck coefficient. Also, bending tests confirm structural stability and exceptional flexibility, and a six-legged flexible device demonstrates a maximum power density of 2996 μW cm−2 at a 40 K temperature difference, showing great application potential. This advancement positions SWCNT films as promising flexible thermoelectric materials, providing insights into high-performance carbon-based thermoelectrics.

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Carrier density and delocalization signatures in doped carbon nanotubes from quantitative magnetic resonance

Hermosilla-Palacios,

Martinez,

Doud

et al. 2024

Nanoscale Horiz.

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Tuning Counterion Chemistry to Reduce Carrier Localization in Doped Thermoelectric Carbon Nanotube Networks

Cited by 3 publications

References 0 publications

Molecular Doping Modulation and Applications of Structure‐Sorted Single‐Walled Carbon Nanotubes: A Review

Molecular Doping Modulation and Applications of Structure‐Sorted Single‐Walled Carbon Nanotubes: A Review

Boosting thermoelectric performance of single-walled carbon nanotubes-based films through rational triple treatments

Carrier density and delocalization signatures in doped carbon nanotubes from quantitative magnetic resonance

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