Water‐Processable, Air‐Stable Organic Nanoparticle–Carbon Nanotube Nanocomposites Exhibiting n‐Type Thermoelectric Properties

Nonoguchi, Yoshiyuki; Tani, Atsushi; Ikeda, Takeshi; Goto, Chigusa; Tanifuji, Naoki; Uda, Ryoko M.; Kawai, Tsuyoshi

doi:10.1002/smll.201603420

Cited by 66 publications

(51 citation statements)

References 34 publications

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“…1). doping with each species [15]. It was found that while malachite green did partially ntype dope the SWCNTs, it wasn't capable of switching the semiconducting behaviour dramatically enough.…”

Section: Methods Of N-type Dopingmentioning

confidence: 99%

“…In this example, the sodium cation will 'seek out' the crown ether and complex in its centre where its charge is stabilised by the lone pairs of the oxygen molecules. Electron transfer reactions between dopant and SWCNT are key to n-type doping and are discussed in many papers on this subject [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]. In its basic form, TPM-CB, possesses no such positive charge and is thus able to undergo electron transfer reactions with the nanotubes through both of its amine chains (Fig.…”

Section: Methods Of N-type Dopingmentioning

confidence: 99%

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Advances in carbon nanotube n-type doping: Methods, analysis and applications

Brownlie

Shapter

2018

Carbon

104

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Great advances in semiconductor technologies continue to be made with the demand for cheap, non-toxic, easily processed and environmentally friendly technologies on the rise. Single-walled carbon nanotubes (SWCNTs) are viewed as a promising candidate that satisfies these criteria however proper doping of the SWCNTs to provide n-type behaviour has been a persistent issue. In recent years, great advances have been made in providing air stable and efficient n-type doping of SWCNTs. This review presents the most recent and promising methods of n-type doping SWCNTs highlighted for their simplicity and quality of electrical properties. The analysis and major applications of these semiconductors with a focus on thermoelectric devices and transistors are discussed.

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Section: Methods Of N-type Dopingmentioning

confidence: 99%

Section: Methods Of N-type Dopingmentioning

confidence: 99%

Advances in carbon nanotube n-type doping: Methods, analysis and applications

Brownlie

Shapter

2018

Carbon

104

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show abstract

“…We consider the thermoelectric properties of CNT films for elucidating their electronics tates at specific doping levels. [27][28][29][30][31][32][33][34][35] These complementary characterizations reveal that ionic and neutral surfactants afford p-typea nd n-type CNTs, respectively.…”

Section: Introductionmentioning

confidence: 99%

Surfactant‐driven Amphoteric Doping of Carbon Nanotubes

Nonoguchi

Tani

Murayama

et al. 2018

Chemistry An Asian Journal

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Aqueous surfactant dispersion is the most typical starting step to functionalize materials consisting of carbon nanotubes, but the effects of surfactants on the electronic properties are stillu nclear.H ere we report how the functional groups of surfactants affect the electronic properties of carbon nanotube films. Using spectroscopic and thermoelectric characterization, we demonstrate that anionic and non-ionic surfactants contribute to the formation of p-type and n-type carbonn anotubes, respectively.A dditionally,p -type doping with oxygen adsorptioni sf ound to competew ith surfactants' doping. These findings are useful for designing the srarting carbon nanotube materials exhibitingd esirable electronic properties. Results and DiscussionHerein we show the effect of the functional groups in surfactants including sulfonate,c arboxylate, and nonionic polyethy- [a] Prof.

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“…2000 S cm −1 from ca. 500 S cm −1 films . Along with this, recent studies suggested that the encapsulation of dopants into SWCNTs might enhance doping efficiency that afford enhanced conductivity …”

Section: Figurementioning

confidence: 84%

“…500 S cm À 1 films. [12][13][14][15][16][17] Along with this, recent studies suggested that the encapsulation of dopants into SWCNTs might enhance doping efficiency that afford enhanced conductivity. [18,19] Herein we introduce advanced molecular dopants for the encapsulation inside SWCNTs.…”

mentioning

confidence: 99%

Ionic Dopant‐Encapsulating Single‐Walled Carbon Nanotube Films with Metal‐Like Electrical Conductivity

Iihara

Kawai

Nonoguchi

2020

Chemistry An Asian Journal

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Heavy doping is inevitable for utilizing single‐walled carbon nanotubes for wiring. However, the electrical conductivity of their films is currently as low as one tenth of the films made from typical metal pastes. Herein we report on metal‐comparable electrical conductivity from single‐walled carbon nanotube network films. We use ionic liquids and crown ether complexes for p‐type and n‐type doping, respectively. The encapsulation of counterions into carbon nanotubes promotes the conductivities in the range of 7000 S cm−1, approximately ten times larger than those of undoped films.

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Water‐Processable, Air‐Stable Organic Nanoparticle–Carbon Nanotube Nanocomposites Exhibiting n‐Type Thermoelectric Properties

Cited by 66 publications

References 34 publications

Advances in carbon nanotube n-type doping: Methods, analysis and applications

Advances in carbon nanotube n-type doping: Methods, analysis and applications

Surfactant‐driven Amphoteric Doping of Carbon Nanotubes

Ionic Dopant‐Encapsulating Single‐Walled Carbon Nanotube Films with Metal‐Like Electrical Conductivity

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