Determination of the electronic transport in type separated carbon nanotubes thin films doped with gold nanocrystals

AbstractWe report a systematic theoretical and experimental investigation on the electronic transport evolution in metallic and semiconducting carbon nanotubes thin films enriched by gold nanocrystals. We used an ultra-clean production method of both types of single-walled carbon nanotube thin films with/without gold nanocrystals, which were uniformly dispersed in the whole volume of the thin films, causing a modification of the doping level of the films (verified by Raman spectroscopy). We propose a modification of the electronic transport model with the additional high-temperature features that allow us to interpret the transport within a broader temperature range and that are related to the conductivity type of carbon nanotubes. Moreover, we demonstrate, that the proposed model is also working for thin films with the addition of gold nanocrystals, and only a change of the conductivity level of our samples is observed caused by modification of potential barriers between carbon nanotubes. We also find unusual behavior of doped metallic carbon nanotube thin film, which lowers its conductivity due to doping.

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A Flow Sensor for Liquids Based on Single-Walled Carbon Nanotube Thin Films

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.121-123.75 ◽

2007 ◽

Vol 121-123 ◽

pp. 75-79 ◽

Cited By ~ 1

Author(s):

C.L. Cao ◽

Liang Fang ◽

K.J. Liao ◽

F.J. Wei ◽

L. Li

Keyword(s):

Thin Films ◽

Carbon Nanotubes ◽

Carbon Nanotube ◽

Angular Velocity ◽

Experimental Studies ◽

Chemical Vapor ◽

Flow Sensor ◽

Single Walled Carbon Nanotube ◽

Single Walled Carbon ◽

Electron Drag

An angular velocity of flow sensor for liquids based on single-walled carbon nanotube thin films is presented. The carbon nanotubes in this study were fabricated on Si substrate by hot filament chemical vapor deposition (CVD). The experimental results showed that the flow-induced current on the surface of carbon nanotube thin films was closely depended upon the angular velocity, concentration, properties and temperature of the liquids. The current increased with increasing angular velocity, concentration and temperature of the liquids. In this study, the liquids such as water, NaCl solution and other electrolyte were flowing over the sensor. The results obtained were also discussed. The theoretical and experimental studies have shown that there was electronic friction and electron drag effect of carbon nanotubes in flowing liquids. This effect in carbon nanotubes can be used for a new flow sensor.

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Author Correction: Determination of the electronic transport in type separated carbon nanotubes thin films doped with gold nanocrystals

Scientific Reports ◽

10.1038/s41598-021-00823-4 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

M. Świniarski ◽

A. Dużyńska ◽

A. P. Gertych ◽

K. Czerniak-Łosiewicz ◽

J. Judek ◽

...

Keyword(s):

Thin Films ◽

Carbon Nanotubes ◽

Electronic Transport ◽

Gold Nanocrystals

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TRANSPORT PROPERTIES OF SINGLE-WALLED CARBON NANOTUBE WITH INTRAMOLECULAR JUNCTIONS

Modern Physics Letters B ◽

10.1142/s0217984910024845 ◽

2010 ◽

Vol 24 (24) ◽

pp. 2445-2455 ◽

Cited By ~ 4

Author(s):

HUI ZENG ◽

HUIFANG HU ◽

JIANWEI WEI ◽

ZHIYONG WANG

Keyword(s):

Carbon Nanotubes ◽

Density Functional Theory ◽

Carbon Nanotube ◽

Transport Properties ◽

Electronic Transport ◽

Density Functional ◽

Topological Defects ◽

Functional Theory ◽

Single Walled Carbon Nanotube ◽

Non Equilibrium Green’S Function

Using density-functional theory (DFT) combined with non-equilibrium Green's function (NEGF), we have investigated the transport properties of carbon nanotubes with S–S, M–S, and M–M heterojunctions. The results show that the local states associated with topological defects arise at the junctions. The position and width of local states strongly depend on the configurations of the topological defects and their arrangement. The (7, 0)–(8, 0) and (8, 0)–(9, 0) heterojunctions present semiconducting characteristics. The (6, 0)–(9, 0) heterojunction maintains metallic properties. However, the 5/6/6/7 defects in the nanostructure decrease the electronic transport. More importantly, our results indicate that the I–V characteristics of the heterojunctions could be effectively controlled by gate voltage.

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Synthesis and Characterization of Poly(2,5-benzimidazole) (ABPBI) Grafted Carbon Nanotubes

MRS Proceedings ◽

10.1557/proc-1240-ww09-02 ◽

2009 ◽

Vol 1240 ◽

Cited By ~ 1

Author(s):

Ji-Ye Kang ◽

Su-Mi Eo ◽

Loon-Seng Tan ◽

Jong-Beom Baek

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

Interfacial Adhesion ◽

Synthesis And Characterization ◽

Acylation Reaction ◽

Single Walled Carbon Nanotube ◽

Mechanical And Electrical Properties ◽

Multi Walled Carbon Nanotube

AbstractSingle-walled carbon nanotube (SWCNT) and multi-walled carbon nanotube (MWCNT) were functionalized with 3,4-diaminobenzoic acid via “direct” Friedel-Crafts acylation reaction in PPA/P2O5 to afford ortho-diamino-functionalized SWCNT (DIF-SWCNT) and MWCNT (DIF-MWCNT). The resultant DIF-SWCNT and DIF-MWCNT showed improved solubility and dispersibility. To improve interfacial adhesion between CNT and polymer matrix, the grafting of ABPBI onto the surface of DIF-SWCNT (10 wt%) or DIF-MWCNT (10 wt%) was conducted by simple in-situ polymerization of AB monomer, 3,4-diaminobenzoic acid dihydrochloride, in PPA. The resultant ABPBI-g-MWCNT and ABPBI-g-SWCNT showed improved the mechanical and electrical properties.

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Formation of Single-Walled Carbon Nanotube Thin Films on Electrodes Monitored by an Electrochemical Quartz Crystal Microbalance

ChemPhysChem ◽

10.1002/1439-7641(20020517)3:5<456::aid-cphc456>3.0.co;2-4 ◽

2002 ◽

Vol 3 (5) ◽

pp. 456 ◽

Cited By ~ 12

Author(s):

Naotoshi Nakashima ◽

Hideaki Kobae ◽

Takamasa Sagara ◽

Hiroto Murakami

Keyword(s):

Thin Films ◽

Carbon Nanotube ◽

Quartz Crystal Microbalance ◽

Quartz Crystal ◽

Electrochemical Quartz Crystal Microbalance ◽

Single Walled Carbon Nanotube ◽

Single Walled Carbon

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Electronic transport, transition-voltage spectroscopy, and the Fano effect in single molecule junctions composed of a biphenyl molecule attached to metallic and semiconducting carbon nanotube electrodes

Physical Chemistry Chemical Physics ◽

10.1039/c4cp00016a ◽

2014 ◽

Vol 16 (36) ◽

pp. 19602-19607 ◽

Cited By ~ 5

Author(s):

Carlos Alberto Brito da Silva Júnior ◽

José Fernando Pereira Leal ◽

Vicente Ferrer Pureza Aleixo ◽

Felipe A. Pinheiro ◽

Jordan Del Nero

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

Single Molecule ◽

Electronic Transport ◽

Fano Effect ◽

Single Molecule Junctions ◽

Transition Voltage ◽

Transport Transition ◽

Transition Voltage Spectroscopy

We investigate electronic transport in semiconductor–molecule–metal junctions consisting of a biphenyl molecule attached to a p-doped semiconductor and metallic carbon nanotubes.

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The effect of defects on the catalytic activity of single Au atom supported carbon nanotubes and reaction mechanism for CO oxidation

Physical Chemistry Chemical Physics ◽

10.1039/c7cp03793g ◽

2017 ◽

Vol 19 (33) ◽

pp. 22344-22354 ◽

Cited By ~ 13

Author(s):

Sajjad Ali ◽

Tian Fu Liu ◽

Zan Lian ◽

Bo Li ◽

Dang Sheng Su

Keyword(s):

Carbon Nanotubes ◽

Density Functional Theory ◽

Catalytic Activity ◽

Carbon Nanotube ◽

Reaction Mechanism ◽

Co Oxidation ◽

Density Functional ◽

Functional Theory ◽

Single Walled Carbon Nanotube ◽

Wales Defect

The mechanism of CO oxidation by O2 on a single Au atom supported on pristine, mono atom vacancy (m), di atom vacancy (di) and the Stone Wales defect (SW) on single walled carbon nanotube (SWCNT) surface is systematically investigated theoretically using density functional theory.

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