Effects of oxygen-containing defect complex on the electronic structures and transport properties of single-walled carbon nanotubes

2012 ◽  
Vol 376 (20) ◽  
pp. 1686-1691 ◽  
Author(s):  
C.X. Zhang ◽  
Chaoyu He ◽  
Zhizhou Yu ◽  
L. Xue ◽  
K.W. Zhang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Transport Properties ◽  
Electronic Structures ◽  
Single Walled Carbon Nanotubes ◽  
Defect Complex ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

scholarly journals Preparation and Thermoelectric Properties of Semiconducting Single-Walled Carbon Nanotubes/Regioregular Poly(3-dodecylthiophene) Composite Films

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2720
Author(s):  
Mengdi Wang ◽  
Qin Yao ◽  
Sanyin Qu ◽  
Yanling Chen ◽  
Hui Li ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Transport Properties ◽  
Thermoelectric Properties ◽  
Composite Films ◽  
Single Walled Carbon Nanotubes ◽  
Dispersion Phase ◽  
Single Walled Carbon ◽  
Seebeck Coefficients ◽  
Regioregular Poly ◽  
Walled Carbon Nanotubes

Single-walled carbon nanotubes (SWNTs) have been widely used as leading additives for improving the thermoelectric properties of organic materials, due to their unique structure and excellent electronic transport properties. However, the as-synthesized SWNTs are mixtures (mix-SWNT) of semiconducting (sc-SWNT) and metallic (met-SWNT) carbon nanotubes. The significantly different surface character and transport behavior of sc-SWNT and met-SWNT frequently raise the difficulty of modifying microstructures, and tuning transport properties of SWNTs/organic composites, when using mix-SWNTs as dispersion phase. Herein, we prepared high quality sc-SWNTs/rr-P3DDT composite film by presorting pure sc-SWNT from the raw mix-SWNTs using regioregular poly(3-dodecylthiophene) (rr-P3DDT). Both the smoothness and compactness of sc-SWNTs/rr-P3DDT are great improved, as compared with the mix-SWNTs/rr-P3DDT films, and the sc-SWNTs are well-dispersed and uniformly wrapped by rr-P3DDT with diameter less than 50 nm. The significantly enhanced Seebeck coefficients and power factors are obtained in the sc-SWNT/rr-P3DDT samples. As the result, the maximum power factor of 60 μW/mK2 in 50 wt% sc-SWNTs sample is 70% higher than that of mix-SWNTs/P3DDT sample. This work reveals the effectiveness of pure semiconductor SWNTs as fillers to optimize the thermoelectric properties of CNT/polymer nano-composites.

Electronic transport properties of ascorbic acid and nicotinamide adsorbed on single-walled carbon nanotubes

2011 ◽  
Vol 506 (4-6) ◽  
pp. 233-238 ◽  
Author(s):  
Vivian M. de Menezes ◽  
Alexandre R. Rocha ◽  
Ivana Zanella ◽  
Ronaldo Mota ◽  
Adalberto Fazzio ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Ascorbic Acid ◽  
Transport Properties ◽  
Electronic Transport ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Electronic Transport Properties ◽  
Walled Carbon Nanotubes
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