Interplay of wall number and diameter on the electrical conductivity of carbon nanotube thin films
Source abstract
Abstract
Abstract We report the interplay between the carbon nanotube (CNT) structure (wall number and diameter) and assembly structure (packing density) on the electrical conductivity of CNT thin films. By controlling the CNT average wall number from 1.0 to 5.5 (and inevitably changing of the diameter from 3.0 to 8.7 nm), the electrical conductivity of CNT films showed a unique and unexpected phenomenon, i.e. peaking for films made from an average wall number of ∼2.7 that was ∼3-times higher than that from single-walled CNTs and ∼1.6-times higher than that from 5.5-walled CNTs. By developing a first-order model, the individual contributions of individual CNT structure and assembly structure were estimated, and we found that the peak arose from offsetting factors: increase in the effective CNT electrical conductivity and decrease in the packing density with increased wall number. The synergetic effect between the CNT structure and the assembly structure would provide a scientific framework to deeply understand CNT assemblies.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Carbon Nanotubes in Composites · Graphene research and applications · Nanopore and Nanochannel Transport Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (34)
Show source-provided references
1. Macroscopic, neat, single-walled carbon nanotube fibers10.1126/science.1101398 ↗
2. Thin film nanotube transistors based on self-assembled, aligned, semiconducting carbon nanotube arrays10.1021/nn800708w ↗
3. Single-walled carbon nanotube-polymer composites: strength and weakness10.1002/(SICI)1521-4095(200005)12:10<750::AID-ADMA750>3.0.CO;2-6 ↗
4. Macroscopic fibers and ribbons of oriented carbon nanotubes10.1126/science.290.5495.1331 ↗
5. Properties and structure of nitric acid oxidized single wall carbon nanotube films10.1021/jp0475988 ↗
6. Fast and highly anisotropic thermal transport through vertically aligned carbon nanotube arrays10.1063/1.2397008 ↗
7. Composites of carbon nanotubes and conjugated polymers for photovoltaic devices10.1002/(SICI)1521-4095(199910)11:15<1281::AID-ADMA1281>3.0.CO;2-6 ↗
8. Mechanically durable and highly conductive elastomeric composites from long single-walled carbon nanotubes mimicking the chain structure of polymers10.1021/nl204221y ↗
9. Does the wall number of carbon nanotubes matter as conductive transparent material?10.1063/1.2767215 ↗
10. High-performance carbon nanotube fiber10.1126/science.1147635 ↗
11. High-density carbon nanotube buckypapers with superior transport and mechanical properties10.1021/nl3023274 ↗
12. Effect of nanotube waviness on the electrical conductivity of carbon nanotube-based composites10.1016/j.compscitech.2007.10.056 ↗
13. High mechanical performance composite conductor: multi-walled carbon nanotube sheet/bismaleimide nanocomposites10.1002/adfm.200900663 ↗
14. Printable thin film supercapacitors using single-walled carbon nanotubes10.1021/nl8038579 ↗
15. Organic solar cells with carbon nanotube network electrodes10.1063/1.2209887 ↗
16. Flexible, stretchable, transparent conducting films made from superaligned carbon nanotubes10.1002/adfm.200901960 ↗
17. Strong, transparent, multifunctional, carbon nanotube sheets10.1126/science.1115311 ↗
18. Hierarchical three-dimensional layer-by-layer assembly of carbon nanotube wafers for integrated nanoelectronic devices10.1021/nl3016472 ↗
19. Electrical and thermal transport properties of magnetically aligned single wall carbon nanotube films10.1063/1.127079 ↗
20. Highly conductive carbon nanotube buckypapers with improved doping stability via conjugational cross-linking
21. Transparent, conductive carbon nanotube films10.1126/science.1101243 ↗
22. Water-assisted highly efficient synthesis of impurity-free single-walled carbon nanotubes10.1126/science.1104962 ↗
23. Available from: .
24. Shape-engineerable and highly densely packed single-walled carbon nanotubes and their application as super-capacitor electrodes10.1038/nmat1782 ↗
25. Highly oriented carbon nanotube papers made of aligned carbon nanotubes10.1088/0957-4484/19/7/075609 ↗
26. Aligned carbon nanotube films: production and optical and electronic properties10.1126/science.268.5212.845 ↗
27. Broken symmetry and pseudogaps in ropes of carbon nanotubes10.1038/35099 ↗
28. Energy gaps in “metallic” single-walled carbon nanotubes10.1126/science.1058853 ↗
29. Approach to the metallic state as obtained from optical and electrical measurements10.1063/1.1733579 ↗
30. Graphene nano-ribbon electronics10.1016/j.physe.2007.06.020 ↗
31. Electronic structure of atomically resolved carbon nanotubes10.1038/34139 ↗
32. Multichannel ballistic transport in multiwall carbon nanotubes10.1103/PhysRevLett.95.086601 ↗
33. 84% Catalyst activity of water-assisted growth of single walled carbon nanotube forest characterization by a statistical and macroscopic approach10.1021/jp060080e ↗
34. Semi-quantitative study on the fabrication of densely packed and vertically aligned single-walled carbon nanotubes10.1016/j.carbon.2006.01.027 ↗