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Carbon Nanotubes: Preparation and Functional Applications

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Composites".

Deadline for manuscript submissions: closed (20 October 2023) | Viewed by 3231

Special Issue Editor

Department of Physics & Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
Interests: carbon nanotube; 2D materials; mixed-dimensional heterostructures

Special Issue Information

Dear Colleagues,

Carbon nanotubes, as one-dimensional nanomaterials, have many unusual mechanical, electrical, and chemical properties. This has drawn tremendous interest from fields ranging from condensed matter physics to chemistry, as well as academia and industry. Carbon nanotubes are widely used and play an important role in nanoelectronics, nano-optoelectronics, composite materials, optics, energy storage materials, etc. The scope of this Special Issue is to carry out research on the special properties and applications of carbon nanotube materials. Additionally, it will provide a platform to discuss the research and application of this material in the fields of nanoelectronics, nano-optoelectronics, flexible electronics, energy storage materials, electron sources, high-strength fibers, composite materials, and thermal interface materials.

Dr. Yang Wei
Guest Editor

Manuscript Submission Information

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Keywords

  • carbon nanotube
  • flexible electronics
  • energy storage materials
  • high-strength fibers
  • composite materials
  • thermal interface materials

Published Papers (2 papers)

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Research

11 pages, 7071 KiB  
Article
High Ampacity On-Chip Wires Implemented by Aligned Carbon Nanotube-Cu Composite
by Xiaojia Luo, Xiao Liang, Yang Wei, Ligan Hou, Ru Li, Dandan Liu, Mo Li and Shuyu Zhou
Materials 2023, 16(3), 1131; https://doi.org/10.3390/ma16031131 - 28 Jan 2023
Viewed by 1440
Abstract
With the size of electronic devices shrinking to the nanometer scale, it is of great importance to develope new wire materials with higher current carrying capacity than traditional materials such as gold (Au) and copper (Cu). This is urgently needed for more efficient, [...] Read more.
With the size of electronic devices shrinking to the nanometer scale, it is of great importance to develope new wire materials with higher current carrying capacity than traditional materials such as gold (Au) and copper (Cu). This is urgently needed for more efficient, compact and functional integrated chips and microsystems. To meet the needs of an atom chip, here we report a new solution by introducing super-aligned carbon nanotubes (SACNTs) into Cu thin films. The microwires exhibit an ultra-high current carrying capacity beyond the limit of the traditional Cu wires, reaching (1.7~2.6) × 107 A·cm−2. The first-principles calculation is used to obtain the band structural characteristics of the CNT–Cu composite material, and the principle of its I–V characteristic curve is analyzed. Driven by the bias voltage, a large number of carriers are injected into the CNT layer from Cu by the strong tunneling effect. Moreover, a variety of microwires can be designed and fabricated on demand for high compatibility with conventional microelectronics technology. The composite structures have great potential in high-power electronic devices, high-performance on-chip interconnecting, as well as other applications that have long-term high-current demands, in addition to atom chips. Full article
(This article belongs to the Special Issue Carbon Nanotubes: Preparation and Functional Applications)
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13 pages, 4025 KiB  
Article
The Effects of Pt-Doped TiO2 Nanoparticles and Thickness of Semiconducting Layers at Photoanode in the Improved Performance of Dye-Sensitized Solar Cells
by M. Mujahid and Omar A. Al-Hartomy
Materials 2022, 15(22), 7941; https://doi.org/10.3390/ma15227941 - 10 Nov 2022
Cited by 2 | Viewed by 1326
Abstract
This work synthesized Pt-doped dye-sensitized solar cells (DSSC) with different molar ratios and thicknesses. The materials were revealed fully through X-ray diffraction (XRD), energy-dispersive spectroscopy (EDS), and transmission electron microscopy (TEM). The photovoltaic properties of the sample were studied by UV-visible spectroscopy, electrochemical [...] Read more.
This work synthesized Pt-doped dye-sensitized solar cells (DSSC) with different molar ratios and thicknesses. The materials were revealed fully through X-ray diffraction (XRD), energy-dispersive spectroscopy (EDS), and transmission electron microscopy (TEM). The photovoltaic properties of the sample were studied by UV-visible spectroscopy, electrochemical impedance spectroscopy (EIS), and IPEC (incident photon-to-current conversion efficiency) techniques. EIS analysis established the decrease in series resistance at the electrolyte interface. It could be one of the reasons for the increase in electron transfer rate and decrease in the recombination process at the interface. Statistical data obtained from optical and electrical investigations revealed that the electrical power-output efficiency of DSSC was 14.25%. It was found that a high ratio of Pt doping and thinner thickness can promote cell performance, owing to the reduction of series resistance, lower bandgap, and high dye adsorption. Doping TiO2 with Pt reduced its energy bandgap and introduces intermediate energy levels inside TiO2 to facilitate the transition of electrons at low excitation energies. The absorbance of the samples 0.15 M Pt and 0.25 M Pt showed improvement in the wavelength ranging from 200 to 800 nm by Pt doping. Full article
(This article belongs to the Special Issue Carbon Nanotubes: Preparation and Functional Applications)
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