Chemical Vapor Depositions of Single Walled Carbon Nanotube thin films and their applications for sensors in aqueous solutions

2004 ◽  
Vol 828 ◽  
Author(s):  
Qiang Fu ◽  
Lei An ◽  
Chenguang Lu ◽  
Jie Liu
Keyword(s):  
Thin Films ◽  
Aqueous Solutions ◽  
Chemical Sensors ◽  
Field Effect Transistors ◽  
Chemical Vapor ◽  
Single Walled Carbon Nanotubes ◽  
Surface Charges ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

AbstractHigh-density and high-quality single walled carbon nanotubes are directly grown on surface by Chemical Vapor Depositions. We found that those SWNT thin films could be used to fabricate thin film field-effect transistors. Those transistors are very sensitive to surface charges changes in aqueous solutions and could be used tobuild chemical sensors.

Efficient Synthesis of Individual Single-Walled Carbon Nanotube by Water-Based Catalyst with Poly(vinylpyrrolidone)

2008 ◽  
Vol 8 (1) ◽  
pp. 329-334 ◽  
Author(s):  
Seung Yol Jeong ◽  
Sang Hyun Jeon ◽  
Gang Hee Han ◽  
Kay Hyeok An ◽  
Dong Jae Bae ◽  
...  
Keyword(s):  
Active Sites ◽  
Field Effect Transistors ◽  
Chemical Vapor ◽  
Average Diameter ◽  
Water Soluble ◽  
Excitation Energies ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
The Individual ◽  
Walled Carbon Nanotubes

Individual single-walled carbon nanotubes (SWCNTs) were synthesized on the patterned water-soluble catalyst by thermal chemical vapor deposition. The individual SWCNTs were obtained by introducing polyvinylpyrrolidone (PVP) as a dispersant. The number of SWCNTs between two electrodes were approximately 1 ∼2 with an average diameter of about 1.7 nm and a yield of forming electrodes of nearly 70%. The PVP played an important role in dispersing catalysts and suppressing the active sites to limit the number of SWCNTs during synthesis, which is a critical condition for fabrication of field effect transistors (FETs). The measured I–V characteristics of the over layer-deposited electrodes revealed a clear gating effect in large portion, in good agreement with Raman observations in several excitation energies. The patterning procedure, catalyst preparation, and growth condition for fabrication of the SWCNT-FET were further discussed.

Growth of diameter-modulated single-walled carbon nanotubes through instant temperature modulation in laser-assisted chemical vapor deposition

2011 ◽  
Vol 1284 ◽  
Author(s):  
M. Mahjouri-Samani ◽  
Y. S. Zhou ◽  
W. Xiong ◽  
Y. Gao ◽  
M. Mitchell ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Temperature Variation ◽  
Electronic Transport ◽  
Vapor Deposition ◽  
Field Effect Transistors ◽  
Chemical Vapor ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

ABSTRACTThe diameter of individual single-walled carbon nanotubes (SWNTs) was successfully modulated along their axes by instant temperature control in a laser-assisted chemical vapor deposition (LCVD) process. SWNTs were grown using different temperature profiles to investigate the effects of temperature variation on their growth. Due to the inverse relationship between SWNT diameter and growth temperature, SWNTs with ascending diameters were obtained by reducing the LCVD temperature from high to low. The diameter-modulated SWNTs were grown across a pair of Mo electrodes to form field-effect transistors (FETs) for investigation of their electronic transport properties. Fabricated devices demonstrated properties similar to Schottky diodes, implying different bandgap structures at the ends of the SWNTs. Raman spectroscopy, transmission electron microscopy, and electronic transport characteristics were studied to investigate the influence of temperature variation on the structural and electronic characteristics of SWNTs.

Conductivity of Thin Films Based on Single-Walled Carbon Nanotubes Grown by Chemical Vapor Deposition

2015 ◽  
Vol 57 (11) ◽  
pp. 1600-1603 ◽  
Author(s):  
M. S. Rybakov ◽  
A. V. Kosobutsky ◽  
О. G. Sevostyanov ◽  
D. М. Russakov ◽  
М. V. Lomakin ◽  
...  
Keyword(s):  
Thin Films ◽  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes ◽  
Conductivity Of Thin Films

Synthesis of Single-Walled Carbon Nanotube Networks on Silicon Nanowires

2007 ◽  
Vol 561-565 ◽  
pp. 1205-1208
Author(s):  
Hideto Yoshida ◽  
Tetsuya Uchiyama ◽  
Jun Kikkawa ◽  
Hideo Kohno ◽  
Seiji Takeda
Keyword(s):  
Silicon Nanowires ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Single Walled Carbon Nanotubes ◽  
Catalyst Nanoparticles ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Co Catalysts ◽  
Walled Carbon Nanotubes ◽  
Carbon Nanotube Networks

Single-walled carbon nanotubes (SWNTs) have been synthesized on silicon nanowires (SiNWs) by ethanol chemical vapor deposition (CVD) using Co catalysts nanoparticles. The surface SiOx layers assist the formation of catalyst nanoparticles on SiNWs by inhibiting the diffusion of Co to Si. Co-Si compounds have formed in SiNWs readily when the surface SiOx layers are very thin. Therefore, the yield of SWNTs is strongly influenced by the thickness of the surface SiOx layers of SiNWs.

Solution-phase p-type doping of highly enriched semiconducting single-walled carbon nanotubes for thermoelectric thin films

2021 ◽  
Vol 119 (2) ◽  
pp. 023302
Author(s):  
Noah J. Stanton ◽  
Rachelle Ihly ◽  
Brenna Norton-Baker ◽  
Andrew J. Ferguson ◽  
Jeffrey L. Blackburn
Keyword(s):  
Thin Films ◽  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Solution Phase ◽  
Single Walled Carbon ◽  
Thermoelectric Thin Films ◽  
P Type ◽  
Walled Carbon Nanotubes

scholarly journals Supramolecular structures of terbium(iii) porphyrin double-decker complexes on a single-walled carbon nanotube surface

RSC Advances ◽  
2019 ◽  
Vol 9 (48) ◽  
pp. 28135-28145
Author(s):  
Ahmed I. A. Abd El-Mageed ◽  
Takuji Ogawa
Keyword(s):  
Carbon Nanotubes ◽  
Scanning Probe Microscopy ◽  
Single Walled Carbon Nanotubes ◽  
Supramolecular Structures ◽  
Scanning Probe ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Double Decker ◽  
Walled Carbon Nanotubes ◽  
First Time

For the first time, using scanning probe microscopy, the supramolecular structures of terbium porphyrin double-decker complexes were observed on single-walled carbon nanotubes surfaces, where the molecules formed a well-ordered self-assembled array.

Selective Synthesis of Single-Walled Carbon Nanotubes by Blending Catalysts

2007 ◽  
Author(s):  
Shuhei Inoue ◽  
Takeshi Nakajima ◽  
Kazuya Nomura ◽  
Yoshihiro Kikuchi
Keyword(s):  
Carbon Nanotubes ◽  
Fermi Level ◽  
Chemical Vapor ◽  
Single Walled Carbon Nanotubes ◽  
Diameter Distribution ◽  
Efficient Catalyst ◽  
Single Walled Carbon ◽  
Similar Density ◽  
Walled Carbon Nanotubes ◽  
Diameter Distributions

Single-walled carbon nanotubes are considered the most attractive material and a lot of synthesis processes are developed. Among these synthesis processes chemical vapor deposition processes are considered to be most suitable for macroscopic production. In many CVD processes the alcohol catalytic CVD process can be the best process because it can produce very pure nanotubes without any purification. However, cobalt is essential as a catalyst that makes the flexibility of catalysts restricted. In this paper, our investigation mainly focused on as follows: The efficiency of combined catalysts with/without cobalt. The diameter distributions against catalysts density. The electrical states of catalysts near Fermi level. Consequently, almost all of cobalt containing catalysts worked well, and the diameter distributions were proportional to the particle size. Efficient catalysts had enough states around Fermi level and the cobalt-less efficient catalyst cluster model showed the similar density of state to the cobalt cluster. Thus, noticing to the DOS, other efficient catalysts can be discovered and the diameter distribution will be controllable by adjusting temperature, a catalyst size, and a catalyst combination without any complicated techniques and facilities.

Growth of Single-Walled Carbon Nanotubes from Ceramic Particles by Alcohol Chemical Vapor Deposition

2008 ◽  
Vol 1 (1) ◽  
pp. 014001 ◽  
Author(s):  
Huaping Liu ◽  
Daisuke Takagi ◽  
Hiroshi Ohno ◽  
Shohei Chiashi ◽  
Tomohito Chokan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Single Walled Carbon Nanotubes ◽  
Ceramic Particles ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes
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