Twisted small organic molecules for high thermoelectric performance of single-walled carbon nanotubes/small organic molecule hybrids through mild charge transfer interactions

2021 ◽  
Author(s):  
Yongjun Jeon ◽  
Jae Gyu Jang ◽  
Sung Hyun Kim ◽  
Jong-In Hong
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Organic Molecule ◽  
Organic Molecules ◽  
Single Walled Carbon Nanotubes ◽  
Thermoelectric Performance ◽  
Hybrid Films ◽  
Small Organic Molecules ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Twisted small organic molecules (SOMs) enhance the thermoelectric performance of single-walled carbon nanotubes (SWCNTs)/SOM hybrid films by dramatically increasing the Seebeck coefficient and minimising the inevitable reduction in electrical conductivity....

scholarly journals Hybrid Films Based on Bilayer Graphene and Single-Walled Carbon Nanotubes: Simulation of Atomic Structure and Study of Electrically Conductive Properties

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1934
Author(s):  
Michael M. Slepchenkov ◽  
Pavel V. Barkov ◽  
Olga E. Glukhova
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Atomic Structure ◽  
Electrical Resistance ◽  
Hybrid Film ◽  
Single Walled Carbon Nanotubes ◽  
Graphene Nanoribbon ◽  
Hybrid Films ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

One of the urgent problems of materials science is the search for the optimal combination of graphene modifications and carbon nanotubes (CNTs) for the formation of layered hybrid material with specified physical properties. High electrical conductivity and stability are one of the main optimality criteria for a graphene/CNT hybrid structure. This paper presents results of a theoretical and computational study of the peculiarities of the atomic structure and the regularities of current flow in hybrid films based on single-walled carbon nanotubes (SWCNTs) with a diameter of 1.2 nm and bilayer zigzag graphene nanoribbons, where the layers are shifted relative to the other. It is found that the maximum stresses on atoms of hybrid film do not exceed ~0.46 GPa for all considered topological models. It is shown that the electrical conductivity anisotropy takes place in graphene/SWCNT hybrid films at a graphene nanoribbon width of 4 hexagons. In the direction along the extended edge of the graphene nanoribbon, the electrical resistance of graphene/SWCNT hybrid film reaches ~125 kOhm; in the direction along the nanotube axis, the electrical resistance is about 16 kOhm. The prospects for the use of graphene/SWCNT hybrid films in electronics are predicted based on the obtained results.

scholarly journals Switching the optical and electrical properties of carbon nanotube hybrid films using a photoresponsive dispersant as a dopant

RSC Advances ◽  
2018 ◽  
Vol 8 (20) ◽  
pp. 11186-11190 ◽  
Author(s):  
H. Jintoku ◽  
Y. Matsuzawa ◽  
M. Yoshida
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Electrical Properties ◽  
Single Walled Carbon Nanotubes ◽  
Optical And Electrical Properties ◽  
Hybrid Films ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

The light-induced switching of the optical and electrical properties of single-walled carbon nanotubes hybrid films with photoresponsive dispersant.

scholarly journals Simple Method to Improve Electrical Conductivity of Films Made from Single-Walled Carbon Nanotubes

Nanomaterials ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 1113 ◽  
Author(s):  
Bogumiła Kumanek ◽  
Tomasz Wasiak ◽  
Grzegorz Stando ◽  
Paweł Stando ◽  
Dariusz Łukowiec ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Single Walled Carbon Nanotubes ◽  
Simple Approach ◽  
Sonication Time ◽  
Free Standing ◽  
Simple Method ◽  
New Approach ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Despite the widespread use of sonication for individualization of nanomaterials, its destructive nature is rarely acknowledged. In this study, we demonstrated how exposure of the material to a hostile sound wave environment can be limited by the application of another preprocessing step. Single-walled carbon nanotubes (CNTs) were initially ground in a household coffee grinder, which enabled facile deagglomeration thereof. Such a simple approach enabled us to obtain high-quality CNT dispersion at reduced sonication time. Most importantly, electrical conductivity of free-standing films prepared from these dispersion was improved almost fourfold as compared with unground material eventually reaching 1067 ± 34 S/cm. This work presents a new approach as to how electrical properties of nanocarbon ensembles may be enhanced without the application of doping agents, the presence of which is often ephemeral.

Enhanced Thermoelectric Performance of Single-Walled Carbon Nanotubes/Polyaniline Hybrid Nanocomposites

ACS Nano ◽  
2010 ◽  
Vol 4 (4) ◽  
pp. 2445-2451 ◽  
Author(s):  
Qin Yao ◽  
Lidong Chen ◽  
Wenqing Zhang ◽  
Shengcong Liufu ◽  
Xihong Chen
Keyword(s):  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Hybrid Nanocomposites ◽  
Thermoelectric Performance ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes
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