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Mattoso S, Brumas V, Evangelisti S, Fronzoni G, Leininger T, Stener M. Electronic Structure of Pentagonal Carbon Nanocones: An ab Initio Study. J Phys Chem A 2023; 127:9723-9732. [PMID: 37939011 PMCID: PMC10683015 DOI: 10.1021/acs.jpca.3c05062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 10/05/2023] [Accepted: 10/06/2023] [Indexed: 11/10/2023]
Abstract
In this work, we investigate the electronic structure of a particular class of carbon nanocones having a pentagonal tip and C5v symmetry. The ground-state nature of the wave function for these structures can be predicted by the recently proposed generalized Hückel rule that extends the original Hückel rule for annulenes to this class of carbon nanocones. In particular, the structures here considered can be classified as closed-shell or anionic/cationic closed-shells, depending on the geometric characteristics of the cone. The goal of this work is to assess the relationship between the electronic configuration of these carbon nanocones and their ability to gain or lose an electron as well as their adsorption capability. For this, the geometry of these structures in the neutral or ionic forms, as well as systems containing either one lithium or fluorine atom, was optimized at the DFT/B3LYP level. It was found that the electron affinity, ionization potential, and the Li or F adsorption energy present an intimate connection to the ground-state wave function character predicted by the generalized Hückel rule. In fact, a peculiar oscillatory energy behavior was discovered, in which the electron affinity, ionization energy, and adsorption energies oscillate with an increase in the nanocone size. The reasoning behind this is that if the anion is closed-shell, then the neutral nanocone will turn out to be a good electron acceptor, increasing the electron affinity and lithium adsorption energy. On the other hand, in the case of a closed-shell cation, this means that the neutral nanocone will easily lose an electron, leading to a smaller ionization potential and higher fluorine adsorption energy.
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Affiliation(s)
- Samuel
Henrique Mattoso
- Dipartimento
di Scienze Chimiche e Farmaceutiche, University
of Trieste, Via Giorgieri 1, 34127 Trieste, Italy
| | - Véronique Brumas
- Laboratoire
de Chimie et Physique Quantiques - FeRMI, Université de Toulouse 3 (Paul Sabatier) et CNRS, 118, Route de Narbonne, F-31062 Toulouse, Cedex, France
| | - Stefano Evangelisti
- Laboratoire
de Chimie et Physique Quantiques - FeRMI, Université de Toulouse 3 (Paul Sabatier) et CNRS, 118, Route de Narbonne, F-31062 Toulouse, Cedex, France
| | - Giovanna Fronzoni
- Dipartimento
di Scienze Chimiche e Farmaceutiche, University
of Trieste, Via Giorgieri 1, 34127 Trieste, Italy
| | - Thierry Leininger
- Laboratoire
de Chimie et Physique Quantiques - FeRMI, Université de Toulouse 3 (Paul Sabatier) et CNRS, 118, Route de Narbonne, F-31062 Toulouse, Cedex, France
| | - Mauro Stener
- Dipartimento
di Scienze Chimiche e Farmaceutiche, University
of Trieste, Via Giorgieri 1, 34127 Trieste, Italy
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2
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Thodkar K, Haluska M, Hierold C. Additive Influence of Top Metal Contact and Alumina Deposition on the Threshold Voltage of Suspended Carbon Nanotube Field-Effect Transistors. ACS OMEGA 2023; 8:27697-27702. [PMID: 37546614 PMCID: PMC10398841 DOI: 10.1021/acsomega.3c03602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 07/11/2023] [Indexed: 08/08/2023]
Abstract
One-dimensional nanostructures such as carbon nanotubes offer excellent properties useful for applications in gas sensors, piezoresistive devices, and radio frequency resonators. Considering their nanoscale form factor, carbon nanotubes (CNTs) are highly sensitive to surface adsorbents. This study presents the fabrication flow of CNT devices with extended passivated areas around electrical contacts between the CNT and source and drain electrodes. These types of structures could help in understanding the intrinsic CNT response by eliminating the analyte impact on the Schottky barrier regions of the CNT field-effect transistors (CNTFETs). The influence of multiple processing conditions on the electronic properties of CNTFETs with a suspended individual CNT used as the CNTFET channel is presented. Our findings show a threshold voltage shift in CNT ISD-Vg characteristics following the metal deposition and alumina atomic layer deposition.
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3
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Electrical Properties of Iodine-Doped Cu/f-CNT Coated Aluminum Wires by Electrophoresis with Copper Sulfate Solution. METALS 2022. [DOI: 10.3390/met12050787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
This work investigated the effects of iodine on copper/functionalized carbon nanotubes (Cu/f-CNT) that were used in the coating of 1350 Aluminum Alloy wires, using the process of electrophoretic exposure with a solution of copper sulfate and iodine, under an electrical current of 1.2 A and a voltage of 10 V. The Al@Cu/f-CNT was characterized by Scanning Electron Microscopy in Secondary Electron mode, X-ray Diffraction and Raman spectroscopy, in addition to electrical measurements, at room temperature and under heating, via kelvin bridge. The results showed an increase of approximately 18% in the electrical conductivity of the IACS compared to the standard aluminum conductor, due to the iodine doping of the outer walls of the f-CNT, causing an expansion between the layers, and reflecting the increase in the conduction channels. This method of electrodeposition of Cu/f-CNT on the surface of metallic wires shows promise for the production of nanostructured cables with high ampacity, lightness and high performance, for application in power transmission lines.
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4
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Zeynalov E, Huseynov A, Huseynov E, Salmanova N, Nagiyev Y, Abdurakhmanova N. Impact of As-Prepared and Purifıed Multi-Walled Carbon Nanotubeson the Liquid-Phase Aerobic Oxidatıon of Hydrocarbons. CHEMISTRY & CHEMICAL TECHNOLOGY 2021. [DOI: 10.23939/chcht15.04.479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The article presents simple kinetic approaches to study the effect of multi-walled carbon nanotubes (MWCNTs) additives on the aerobic oxidation of hydrocarbons and to propose real acceptable mechanisms of the process. The aerobic liquid phase low-temperature oxidation of ethylbenzene conducted in the presence of multi-walled carbon nanotubes has been used as a model pattern. Kinetic analysis established the catalytic action associated with the presence of the iron compounds in inner channels of MWCNTs. These compounds are identified as ferric carbides provoking decomposition of the ethylbenzene hydroperoxide and thereby suppressing the competitive route of alky-peroxide radicals addition to the nanocarbon cage. Thus the reaction finally proceeds in the autocatalytic mode.Contradictory conclusions on the effect of CNTs on the oxidation chain processes existing in the literature are associated with the lack of control over nature and content of metal impurities in channels of nanotubes.
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5
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New effect of strong oscillation and anisotropy of electrical conductance in graphene films with vertically aligned carbon nanotubes and monolayer pillared graphene films. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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6
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Uchino T, Ayre GN, Smith DC, Hutchison JL, de Groot CH, Ashburn P. The Effects of Hydrogen Annealing on Carbon Nanotube Field-Effect Transistors. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2481. [PMID: 34684921 PMCID: PMC8540963 DOI: 10.3390/nano11102481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/17/2021] [Accepted: 09/20/2021] [Indexed: 11/17/2022]
Abstract
We have systematically investigated the effects of hydrogen annealing on Ni- and Al-contacted carbon nanotube field-effect transistors (CNTFETs), whose work functions have not been affected by hydrogen annealing. Measured results show that the electronic properties of single-walled carbon nanotubes are modified by hydrogen adsorption. The Ni-contacted CNTFETs, which initially showed metallic behavior, changed their p-FET behavior with a high on-current over 10 µA after hydrogen annealing. The on-current of the as-made p-FETs is much improved after hydrogen annealing. The Al-contacted CNTFETs, which initially showed metallic behavior, showed unipolar p-FET behavior after hydrogen annealing. We analyzed the energy band diagrams of the CNTFETs to explain experimental results, finding that the electron affinity and the bandgap of single-walled carbon nanotubes changed after hydrogen annealing. These results are consistent with previously reported ab initio calculations.
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Affiliation(s)
- Takashi Uchino
- Department of Electrical and Electronic Engineering, Tohoku Institute of Technology, Sendai 982-8577, Japan
| | - Greg N. Ayre
- School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, UK; (G.N.A.); (D.C.S.)
| | - David C. Smith
- School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, UK; (G.N.A.); (D.C.S.)
| | - John L. Hutchison
- Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, UK;
| | - C. H. de Groot
- School of Electronics and Computer Science, University of Southampton, Southampton SO17 1BJ, UK; (C.H.d.G.); (P.A.)
| | - Peter Ashburn
- School of Electronics and Computer Science, University of Southampton, Southampton SO17 1BJ, UK; (C.H.d.G.); (P.A.)
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7
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Probing Laser Plasma Dynamics Using High-Order Harmonics Generation in Carbon-Containing Nanomaterials. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11052143] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We study high-order harmonics generation from plasmas generated from graphite, fullerenes, carbon nanotubes, carbon nanofibers, diamond nanoparticles, and graphene. Our approach utilizes a heating nanosecond laser pulse to produce plasmas that serve as the media for high harmonic generation from a subsequent driven femtosecond laser pulse. High harmonics are generated at different time delays following the plasma formation, which allows us to analyze the spreading of species with different masses. We analyze the harmonic yields from species of single carbon atom, 60 atoms (fullerene), 106 atoms (diamond nanoparticles), 109 atoms (CNTs and CNFs), and even much larger species of graphene sheets. The harmonic yields are analyzed in the range of 100 ns–1 ms delays. The harmonic yields were significantly higher within the 200 ns–0.5 µs range, but no harmonic is observed between 10 µs–1 ms. Our observations show that, at the optimal ablation of atoms and clusters, the laser-induced plasmas produced on the surfaces of different carbon-contained species spread out from targets with the comparable velocities.
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Wang J, Li W, Ma L. Carbon and germanium nanocages as anode electrodes in sodium-ion and potassium-ion batteries. J Mol Model 2021; 27:64. [PMID: 33528640 DOI: 10.1007/s00894-021-04695-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 01/25/2021] [Indexed: 01/11/2023]
Abstract
Here, the potential of C36, C48, and Ge48 nanocages as anodes of Na-ion battery (IB) and K-IB are investigated by DFT/M06-2X and DFT/B3LYP in gas and solvent. The EFormation and EGap of C36, C48, and Ge48 nanocages are investigated by theoretical methods. The vertical and adiabatic EA and IP of C36, C48, and Ge48 nanocages are examined in gas and solvent. The Ead of Na+ and K+ on inner and outer positions of C36, C48, and Ge48 nanocages are investigated. The Vcell and CTheory of C36, C48, and Ge48 as anodes of batteries are investigated. The results of this paper proposed the nano materials (C48 and Ge48 nanocage) as anodes of Na-IB and K-IB with higher CTheory and Vcell than graphene nanosheet.
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Affiliation(s)
- Jianfeng Wang
- Science & Technology College, North China Electric Power University, Baoding, 071003, China.
| | - Weihua Li
- School of Energy Power and Mechanical Engineering, North China Electric Power University, Baoding, 071003, China
| | - Lina Ma
- Science & Technology College, North China Electric Power University, Baoding, 071003, China
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Bodik M, Maxian O, Hagara J, Nadazdy P, Jergel M, Majkova E, Siffalovic P. Langmuir-Scheaffer Technique as a Method for Controlled Alignment of 1D Materials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:4540-4547. [PMID: 32298112 DOI: 10.1021/acs.langmuir.0c00045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A widely applicable method for aligning 1D materials, and in particular carbon nanotubes (CNTs), independent of their preparation would be very useful as the growth methods for these materials are substance-specific. Langmuir-Schaefer (LS) deposition could be such an approach for alignment, as it aligns a large number of 1D materials independently of the desired substrate. However, the mechanism and required conditions for alignment of 1D nanomaterials in a Langmuir trough are still unclear. Here we show, relying on numerical simulations of the Langmuir film compression, that the LS method is a powerful tool to achieve maximal alignment of 1D material in a controllable manner. In particular, 1D materials terminated with a suitable surfactant can align only if the velocity induced by the attraction between individual 1D entities is low enough relative to the flow speed. To validate this model, we achieved an efficient LS alignment of single-walled carbon nanotubes covered with a suitable surfactant relying on the numerical simulations. In situ polarized Raman microspectroscopy during the compression of Langmuir film revealed good quantitative agreement between the numerical simulations and the experiment. This suggests the applicability of the LS technique as a versatile method for the controlled alignment of 1D materials.
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Affiliation(s)
- Michal Bodik
- Institute of Physics, Slovak Academy of Sciences, Dubravska cesta 9, 845 11 Bratislava, Slovakia
| | - Ondrej Maxian
- Courant Institute of Mathematical Sciences, New York University, 251 Mercer Street, New York, New York 10003, United States
| | - Jakub Hagara
- Institute of Physics, Slovak Academy of Sciences, Dubravska cesta 9, 845 11 Bratislava, Slovakia
| | - Peter Nadazdy
- Institute of Physics, Slovak Academy of Sciences, Dubravska cesta 9, 845 11 Bratislava, Slovakia
| | - Matej Jergel
- Institute of Physics, Slovak Academy of Sciences, Dubravska cesta 9, 845 11 Bratislava, Slovakia
| | - Eva Majkova
- Institute of Physics, Slovak Academy of Sciences, Dubravska cesta 9, 845 11 Bratislava, Slovakia
- Centre for Advanced Materials Application, Dubravska cesta 9, 845 11 Bratislava, Slovakia
| | - Peter Siffalovic
- Institute of Physics, Slovak Academy of Sciences, Dubravska cesta 9, 845 11 Bratislava, Slovakia
- Centre for Advanced Materials Application, Dubravska cesta 9, 845 11 Bratislava, Slovakia
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10
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Rackauskas S, Rackauskas T, Alaferdov A, Vaz A, Savu R, Moshkalev SA. Multilayer graphene nanobelts on SWCNT films for high current interconnect applications. NANOTECHNOLOGY 2019; 30:245203. [PMID: 30780135 DOI: 10.1088/1361-6528/ab083f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this work we propose multilayer graphene (MLG) nanobelts for high current interconnections with single wall carbon nanotubes (SWCNT) and compare these with metal contacts. MLG contacts were directly printed on the SWCNT, without any additional metal parts, demonstrating the possibility to use these materials as interconnections in microelectronics. Different work function metals Al, Ti and Pd were probed for the lowest contact resistance with the SWCNT. Ti contacts demonstrated the best results among the metals owing to its work function being closest to the SWCNT and therefore giving the lowest Schottky barrier. Even though Ti contacts show the lowest contact resistance, the current density for MLG contacts was higher, giving the best results for high current interconnection applications. Moreover, MLG contacts show a stable and repeatable resistance decrease under high current conditions. Heat treatment of the MLG and metal contacts was completed in vacuum, in order to further reduce the contact resistance and optimal heat treatment conditions were found at 600 °C.
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Affiliation(s)
- Simas Rackauskas
- Department of Physics, Kaunas University of Technology, Studentu St. 50, LT-51368, Kaunas, Lithuania. Institute of Materials Science, Kaunas University of Technology, K. Barsausko St. 59, LT-51423, Kaunas, Lithuania
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11
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Saitow M, Dutta AK, Neese F. Accurate Ionization Potentials, Electron Affinities and Electronegativities of Single-Walled Carbon Nanotubes by State-of-the-Art Local Coupled-Cluster Theory. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20180254] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Masaaki Saitow
- Department of Chemistry, Graduate School of Science, Nagoya University, 1-5 Chikusa-ku, Nagoya, Aichi 464-8602, Japan
| | | | - Frank Neese
- Max-Planck-Institut für Kohlenforschung, 1 Kaiser-Wilhelm Platz, Mülheim an der Ruhr 45470, Germany
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12
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Gholidoust A, Maina JW, Merenda A, Schütz JA, Kong L, Hashisho Z, Dumée LF. CO2 sponge from plasma enhanced seeded growth of metal organic frameworks across carbon nanotube bucky-papers. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.07.085] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Peng B, Govind N, Aprà E, Klemm M, Hammond JR, Kowalski K. Coupled Cluster Studies of Ionization Potentials and Electron Affinities of Single-Walled Carbon Nanotubes. J Phys Chem A 2017; 121:1328-1335. [DOI: 10.1021/acs.jpca.6b10874] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bo Peng
- William
R. Wiley Environmental Molecular Sciences Laboratory, Battelle, Pacific Northwest National Laboratory, K8-91, P.O. Box
999, Richland, Washington 99352, United States
| | - Niranjan Govind
- William
R. Wiley Environmental Molecular Sciences Laboratory, Battelle, Pacific Northwest National Laboratory, K8-91, P.O. Box
999, Richland, Washington 99352, United States
| | - Edoardo Aprà
- William
R. Wiley Environmental Molecular Sciences Laboratory, Battelle, Pacific Northwest National Laboratory, K8-91, P.O. Box
999, Richland, Washington 99352, United States
| | - Michael Klemm
- Intel Deutschland GmbH, Feldkirchen, Munich 08016, Germany
| | | | - Karol Kowalski
- William
R. Wiley Environmental Molecular Sciences Laboratory, Battelle, Pacific Northwest National Laboratory, K8-91, P.O. Box
999, Richland, Washington 99352, United States
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14
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Cui Z, Ke X, Li E, Zhao T, Qi Q, Yan J, Ding Y, Liu T. GaN nanowire field emitters with the adsorption of Pt nanoparticles. RSC Adv 2017. [DOI: 10.1039/c7ra02568h] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report Pt NP coated GaN NWs through CVD method and the fabrication of their field emitters.
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Affiliation(s)
- Zhen Cui
- School of Automation and Information Engineering
- Xi'an University of Technology
- Xi'an 710048
- Republic of China
| | - Xizheng Ke
- School of Automation and Information Engineering
- Xi'an University of Technology
- Xi'an 710048
- Republic of China
| | - Enling Li
- School of Automation and Information Engineering
- Xi'an University of Technology
- Xi'an 710048
- Republic of China
| | - Taifei Zhao
- School of Automation and Information Engineering
- Xi'an University of Technology
- Xi'an 710048
- Republic of China
| | - Qingping Qi
- School of Automation and Information Engineering
- Xi'an University of Technology
- Xi'an 710048
- Republic of China
| | - Jie Yan
- School of Automation and Information Engineering
- Xi'an University of Technology
- Xi'an 710048
- Republic of China
| | - Yingchun Ding
- College of Optoelectronics Technology
- Chengdu University of Information Technology
- Chengdu 610225
- People's Republic of China
| | - Tong Liu
- School of Physics & Astronomy
- Queen Mary University of London
- London E1 4NS
- UK
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15
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Dutra LM, Vital de Oliveira O, Divino dos Santos J. Computational Studies on the Encapsulation of 1,4-Dihydropyridine Derivatives into CNT(10,10). Aust J Chem 2017. [DOI: 10.1071/ch16165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Abstract
Semiempirical and density functional theory (DFT) methods were herein used to study the encapsulation process of 1,4-dihydropyridine (DHP) derivatives into (10,10) armchair carbon nanotube (CNT(10,10)). The encapsulated DHPs do not affect the overall structural and electronic properties of the CNT(10,10). The following binding energy was obtained from DFT-D3 calculations: DHP_Cl2@CNT(10,10) (–62.36 kcal mol–1) < DHP_Ph@CNT(10,10) (–54.71 kcal mol–1) < DHP_OH@CNT(10,10) (–43.92 kcal mol–1) < DHP_NO2@CNT(10,10) (–41.71 kcal mol–1) < DHP_H@CNT(10,10) (–32.74 kcal mol–1). The increase in the dipole moment for all DHPs@CNT(10,10) indicates their partial solubility in water. Our results play a promising role as a guide for future experiments using CNTs as a vehicle to transport DHP derivatives.
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16
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González-Durruthy M, Werhli AV, Cornetet L, Machado KS, González-Díaz H, Wasiliesky W, Ruas CP, Gelesky MA, Monserrat JM. Predicting the binding properties of single walled carbon nanotubes (SWCNT) with an ADP/ATP mitochondrial carrier using molecular docking, chemoinformatics, and nano-QSBR perturbation theory. RSC Adv 2016. [DOI: 10.1039/c6ra08883j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Interactions between single walled carbon nanotubes (SWCNT) family with mitochondrial ADP/ATP carrier (ANT-1) were evaluated using constitutional and electronic nanodescriptors defined by (n, m)-Hamada indexes (armchair, zig-zag and chiral).
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Affiliation(s)
- Michael González-Durruthy
- Instituto de Ciências Biológicas (ICB) – Universidade Federal do Rio Grande-FURG
- Rio Grande
- Brazil
- Programa de Pós-Graduação em Ciências Fisiológicas-Fisiologia Animal Comparada-ICB-FURG
- Brazil
| | - Adriano V. Werhli
- Centro de Ciências Computacionais (C3) – Universidade Federal do Rio Grande-FURG
- Brazil
- Programa de Pós-Graduação em Computação-C3-FURG
- Brazil
| | - Luisa Cornetet
- Centro de Ciências Computacionais (C3) – Universidade Federal do Rio Grande-FURG
- Brazil
- Programa de Pós-Graduação em Computação-C3-FURG
- Brazil
| | - Karina S. Machado
- Centro de Ciências Computacionais (C3) – Universidade Federal do Rio Grande-FURG
- Brazil
- Programa de Pós-Graduação em Computação-C3-FURG
- Brazil
| | - Humberto González-Díaz
- Department of Organic Chemistry II
- Faculty of Science and Technology
- University of the Basque Country UPV/EHU
- Leioa
- Spain
| | | | | | - Marcos A. Gelesky
- Programa de Pós-graduação em Química Tecnológica e Ambiental
- FURG
- Brazil
| | - José M. Monserrat
- Instituto de Ciências Biológicas (ICB) – Universidade Federal do Rio Grande-FURG
- Rio Grande
- Brazil
- Programa de Pós-Graduação em Ciências Fisiológicas-Fisiologia Animal Comparada-ICB-FURG
- Brazil
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17
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Shin H, Guan J, Zgierski MZ, Kim KS, Kingston CT, Simard B. Covalent Functionalization of Boron Nitride Nanotubes via Reduction Chemistry. ACS NANO 2015; 9:12573-82. [PMID: 26580970 DOI: 10.1021/acsnano.5b06523] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Boron nitride nanotubes (BNNTs) exhibit a range of properties that hold great potential for many fields of science and technology; however, they have inherently low chemical reactivity, making functionalization for specific applications difficult. Here we propose that covalent functionalization of BNNTs via reduction chemistry could be a highly promising and viable strategy. Through density functional theory calculations of the electron affinity of BNNTs and their binding energies with various radicals, we reveal that their chemical reactivity can be significantly enhanced via reducing the nanotubes (i.e., negatively charging). For example, a 5.5-fold enhancement in reactivity of reduced BNNTs toward NH2 radicals was predicted relative to their neutral counterparts. The localization characteristics of the BNNT π electron system lead the excess electrons to fill the empty p orbitals of boron sites, which promote covalent bond formation with an unpaired electron from a radical molecule. In support of our theoretical findings, we also experimentally investigated the covalent alkylation of BNNTs via reduction chemistry using 1-bromohexane. The thermogravimetric measurements showed a considerable weight loss (12-14%) only for samples alkylated using reduced BNNTs, suggesting their significantly improved reactivity over neutral BNNTs. This finding will provide an insight in developing an effective route to chemical functionalization of BNNTs.
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Affiliation(s)
- Homin Shin
- Security and Disruptive Technologies Portfolio, Emerging Technologies Division, National Research Council Canada , Ottawa, Ontario K1A 0R6, Canada
| | - Jingwen Guan
- Security and Disruptive Technologies Portfolio, Emerging Technologies Division, National Research Council Canada , Ottawa, Ontario K1A 0R6, Canada
| | - Marek Z Zgierski
- Security and Disruptive Technologies Portfolio, Emerging Technologies Division, National Research Council Canada , Ottawa, Ontario K1A 0R6, Canada
| | - Keun Su Kim
- Security and Disruptive Technologies Portfolio, Emerging Technologies Division, National Research Council Canada , Ottawa, Ontario K1A 0R6, Canada
| | - Christopher T Kingston
- Security and Disruptive Technologies Portfolio, Emerging Technologies Division, National Research Council Canada , Ottawa, Ontario K1A 0R6, Canada
| | - Benoit Simard
- Security and Disruptive Technologies Portfolio, Emerging Technologies Division, National Research Council Canada , Ottawa, Ontario K1A 0R6, Canada
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18
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Adamska L, Nazin GV, Doorn SK, Tretiak S. Self-Trapping of Charge Carriers in Semiconducting Carbon Nanotubes: Structural Analysis. J Phys Chem Lett 2015; 6:3873-3879. [PMID: 26722885 DOI: 10.1021/acs.jpclett.5b01729] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The spatial extent of charged electronic states in semiconducting carbon nanotubes with indices (6,5) and (7,6) was evaluated using density functional theory. It was observed that electrons and holes self-trap along the nanotube axis on length scales of about 4 and 8 nm, respectively, which localize cations and anions on comparable length scales. Self-trapping is accompanied by local structural distortions showing periodic bond-length alternation. The average lengthening (shortening) of the bonds for anions (cations) is expected to shift the G-mode frequency to lower (higher) values. The smaller-diameter nanotube has reduced structural relaxation due to higher carbon-carbon bond strain. The reorganization energy due to charge-induced deformations in both nanotubes is found to be in the 30-60 meV range. Our results represent the first theoretical simulation of self-trapping of charge carriers in semiconducting nanotubes, and agree with available experimental data.
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Affiliation(s)
- Lyudmyla Adamska
- Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory , Los Alamos, New Mexico 87545, United States
| | - George V Nazin
- Department of Chemistry and Biochemistry, University of Oregon , 1253 University of Oregon, Eugene, Oregon 97403, United States
| | - Stephen K Doorn
- Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory , Los Alamos, New Mexico 87545, United States
| | - Sergei Tretiak
- Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory , Los Alamos, New Mexico 87545, United States
- Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory , Los Alamos, New Mexico 87545, United States
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19
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Mechanical properties of carbon, silicon carbide, and boron nitride nanotubes: effect of ionization. MONATSHEFTE FUR CHEMIE 2015. [DOI: 10.1007/s00706-015-1537-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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20
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Fripiat JG, Champagne B, Harris FE. The Fourier Space Restricted Hartree–Fock Method for the Electronic Structure Calculation of One-Dimensionally Periodic Systems. ADVANCES IN QUANTUM CHEMISTRY 2015. [DOI: 10.1016/bs.aiq.2015.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Frielinghaus R, Besson C, Houben L, Saelhoff AK, Schneider CM, Meyer C. Controlled covalent binding of antiferromagnetic tetramanganese complexes to carbon nanotubes. RSC Adv 2015. [DOI: 10.1039/c5ra14983e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Tetramanganese complexes are covalently attached to carbon nanotubes such, that the magnetic properties of the antiferromagnetic molecules are preserved.
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Affiliation(s)
- R. Frielinghaus
- Peter Grünberg Institute (PGI-6)
- Forschungszentrum Jülich
- JARA-Fundamentals of Future Information Technologies
- 52425 Jülich
- Germany
| | - C. Besson
- Institute of Inorganic Chemistry
- RWTH Aachen University
- JARA-Fundamentals of Future Information Technologies
- Aachen
- Germany
| | - L. Houben
- Peter Grünberg Institute (PGI-5) and Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons
- Forschungszentrum Jülich
- 52425 Jülich
- Germany
| | - A.-K. Saelhoff
- Peter Grünberg Institute (PGI-6)
- Forschungszentrum Jülich
- JARA-Fundamentals of Future Information Technologies
- 52425 Jülich
- Germany
| | - C. M. Schneider
- Peter Grünberg Institute (PGI-6)
- Forschungszentrum Jülich
- JARA-Fundamentals of Future Information Technologies
- 52425 Jülich
- Germany
| | - C. Meyer
- Peter Grünberg Institute (PGI-6)
- Forschungszentrum Jülich
- JARA-Fundamentals of Future Information Technologies
- 52425 Jülich
- Germany
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22
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Gong M, Shastry TA, Xie Y, Bernardi M, Jasion D, Luck KA, Marks TJ, Grossman JC, Ren S, Hersam MC. Polychiral semiconducting carbon nanotube-fullerene solar cells. NANO LETTERS 2014; 14:5308-14. [PMID: 25101896 DOI: 10.1021/nl5027452] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Single-walled carbon nanotubes (SWCNTs) have highly desirable attributes for solution-processable thin-film photovoltaics (TFPVs), such as broadband absorption, high carrier mobility, and environmental stability. However, previous TFPVs incorporating photoactive SWCNTs have utilized architectures that have limited current, voltage, and ultimately power conversion efficiency (PCE). Here, we report a solar cell geometry that maximizes photocurrent using polychiral SWCNTs while retaining high photovoltage, leading to record-high efficiency SWCNT-fullerene solar cells with average NREL certified and champion PCEs of 2.5% and 3.1%, respectively. Moreover, these cells show significant absorption in the near-infrared portion of the solar spectrum that is currently inaccessible by many leading TFPV technologies.
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Affiliation(s)
- Maogang Gong
- Department of Chemistry, University of Kansas , Lawrence, Kansas 66045, United States
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23
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Sydoruk VA, Goß K, Meyer C, Petrychuk MV, Danilchenko BA, Weber P, Stampfer C, Li J, Vitusevich SA. Low-frequency noise in individual carbon nanotube field-effect transistors with top, side and back gate configurations: effect of gamma irradiation. NANOTECHNOLOGY 2014; 25:035703. [PMID: 24345726 DOI: 10.1088/0957-4484/25/3/035703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We report on the influence of low gamma irradiation (10(4) Gy) on the noise properties of individual carbon nanotube (CNT) field-effect transistors (FETs) with different gate configurations and two different dielectric layers, SiO2 and Al2O3. Before treatment, strong generation-recombination (GR) noise components are observed. These data are used to identify several charge traps related to dielectric layers of the FETs by determining their activation energy. Investigation of samples with a single SiO2 dielectric layer as well as with two dielectric layers allows us to separate traps for each of the two dielectric layers. We reveal that each charge trap level observed in the side gate operation splits into two levels in top gate operation due to a different potential profile along the CNT channel. After gamma irradiation, only reduced flicker noise is registered in the noise spectra, which indicates a decrease of the number of charge traps. The mobility, which is estimated to be larger than 2 × 10(4) cm(2) V(-1) s(-1) at room temperature, decreases only slightly after radiation treatment, demonstrating high radiation hardness of the CNTs. Finally, we study the influence of Schottky barriers at the metal-nanotube interface on the transport properties of FETs, analyzing the behavior of the flicker noise component.
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Affiliation(s)
- V A Sydoruk
- Peter Grünberg Institute (PGI-6/8/9; IBG-2) and Jülich-Aachen Research Alliance for Future Information Technology (JARA-FIT), Forschungszentrum Jülich, D-52425 Jülich, Germany
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24
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Li Z, Moon KS, Lin Z, Yao Y, Wilkins S, Wong CP. Carbon nanotubes inhibit the free-radical cross-linking of siloxane polymers. J Appl Polym Sci 2014. [DOI: 10.1002/app.40355] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Zhuo Li
- School of Materials Science and Engineering; Georgia Institute of Technology; 771 Ferst Drive NW Atlanta Georgia 30332
| | - Kyoung-sik Moon
- School of Materials Science and Engineering; Georgia Institute of Technology; 771 Ferst Drive NW Atlanta Georgia 30332
| | - Ziyin Lin
- School of Materials Science and Engineering; Georgia Institute of Technology; 771 Ferst Drive NW Atlanta Georgia 30332
| | - Yagang Yao
- School of Materials Science and Engineering; Georgia Institute of Technology; 771 Ferst Drive NW Atlanta Georgia 30332
- Suzhou Institute of Nanotech and Nanobionics, Chinese Academy of Science; 398 Ruoshui Road, SEID, SIP Suzhou Jiangsu People's Republic of China
| | - Stewart Wilkins
- School of Materials Science and Engineering; Georgia Institute of Technology; 771 Ferst Drive NW Atlanta Georgia 30332
| | - C. P. Wong
- School of Materials Science and Engineering; Georgia Institute of Technology; 771 Ferst Drive NW Atlanta Georgia 30332
- Faculty of Engineering; The Chinese University of Hong Kong; Shatin Hong Kong People's Republic of China
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25
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Kozłowska J, Zaleśny R, Bartkowiak W. On the nonlinear electrical properties of molecules in confined spaces – From cylindrical harmonic potential to carbon nanotube cages. Chem Phys 2014. [DOI: 10.1016/j.chemphys.2013.10.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Boshra A, Bagheri S, Jadidi S. Global Reactivity of Heterostructure Armchair BC2N-(4,4) Nanotubes: A Density Functional Theory Investigation. HETEROATOM CHEMISTRY 2013. [DOI: 10.1002/hc.21078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Asadollah Boshra
- Nanoscience Computation Lab; Islamic Azad University, Boroujerd Branch; Boroujerd; Iran
| | - Samira Bagheri
- Nanotechnology and Catalysis Research Centre (NANOCAT); Block 3A, Institute of Postgraduate Studies Building University Malaya; 50603 Kuala Lumpur; Malaysia
| | - Siamak Jadidi
- Department of Physics, Science and Research Branch; Islamic Azad University; Hesarak; Tehran; Iran
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27
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Borriello I, Cantele G, Ninno D. Graphene nanoribbon electrical decoupling from metallic substrates. NANOSCALE 2013; 5:291-298. [PMID: 23160545 DOI: 10.1039/c2nr31937c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We address the structural and electronic properties of graphene nanoribbons (GNRs) covalently immobilized on a metallic substrate by means of an organic layer. The GNR-organic layer and organic layer-metal interfaces can be thought of as constituents of a nanodevice and have been accurately studied using large-scale density functional theory calculations. Our results demonstrate the possibility of combining nanopatterned metal-organic layer substrates with selected GNRs to obtain well ordered and stable structures while preserving the GNR energy band gap, an essential requirement for any switching nanodevice.
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Affiliation(s)
- Ivo Borriello
- Università di Napoli Federico II, Dipartimento di Scienze Fisiche, Complesso Universitario Monte Sant'Angelo, Via Cintia, I-80126 Napoli, Italy
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28
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Ashraf MK, Bruque NA, Tan JL, Beran GJO, Lake RK. Conductance switching in diarylethenes bridging carbon nanotubes. J Chem Phys 2011; 134:024524. [DOI: 10.1063/1.3528118] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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29
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Prasomsri T, Shi D, Resasco DE. Anchoring Pd nanoclusters onto pristine and functionalized single-wall carbon nanotubes: A combined DFT and experimental study. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2010.08.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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30
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Gracia-Espino E, Sala G, Pino F, Halonen N, Luomahaara J, Mäklin J, Tóth G, Kordás K, Jantunen H, Terrones M, Helistö P, Seppä H, Ajayan PM, Vajtai R. Electrical transport and field-effect transistors using inkjet-printed SWCNT films having different functional side groups. ACS NANO 2010; 4:3318-24. [PMID: 20481513 DOI: 10.1021/nn1000723] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The electrical properties of random networks of single-wall carbon nanotubes (SWNTs) obtained by inkjet printing are studied. Water-based stable inks of functionalized SWNTs (carboxylic acid, amide, poly(ethylene glycol), and polyaminobenzene sulfonic acid) were prepared and applied to inkjet deposit microscopic patterns of nanotube films on lithographically defined silicon chips with a back-side gate arrangement. Source-drain transfer characteristics and gate-effect measurements confirm the important role of the chemical functional groups in the electrical behavior of carbon nanotube networks. Considerable nonlinear transport in conjunction with a high channel current on/off ratio of approximately 70 was observed with poly(ethylene glycol)-functionalized nanotubes. The positive temperature coefficient of channel resistance shows the nonmetallic behavior of the inkjet-printed films. Other inkjet-printed field-effect transistors using carboxyl-functionalized nanotubes as source, drain, and gate electrodes, poly(ethylene glycol)-functionalized nanotubes as the channel, and poly(ethylene glycol) as the gate dielectric were also tested and characterized.
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Affiliation(s)
- Eduardo Gracia-Espino
- Advanced Materials Department, Instituto Potosino de Investigacion Cientifica y Tecnologica, camino a la presa San Jose 2055, Col. Lomas 4. Seccion, 78216 San Luis Potosi, Mexico
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31
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Beheshti A, Riahi S, Ganjali MR. Quantitative structure–property relationship study on first reduction and oxidation potentials of donor-substituted phenylquinolinylethynes and phenylisoquinolinylethynes: Quantum chemical investigation. Electrochim Acta 2009. [DOI: 10.1016/j.electacta.2009.04.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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32
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Mao LF. Finite size effects on the gate leakage current in graphene nanoribbon field-effect transistors. NANOTECHNOLOGY 2009; 20:275203. [PMID: 19528675 DOI: 10.1088/0957-4484/20/27/275203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The finite size effects in nanoribbon graphene field-effect transistors (FETs) make the energy distribution of the channel electrons very different from that when neglecting finite size effects. Such an effect is especially obvious when the width of the graphene ribbon is a few nanometers. Thus, it results in more high-energy electrons in a nanoribbon graphene FET than in a two-dimensional graphene FET for the same device structure and parameters. Furthermore, such an energy distribution of channel electrons results in a change in the gate leakage current of a nanoribbon graphene FET. The numerical calculations demonstrate that the tunneling current rapidly increases with decreasing width of the graphene ribbon. This implies that a workable graphene FET after considering gate oxide reliability should have a channel width larger than 100 nm.
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Affiliation(s)
- Ling-Feng Mao
- School of Electronics and Information Engineering, Soochow University, 178 Gan-jiang East Road, Suzhou 215021, People's Republic of China. mail
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