scholarly journals Single Wall Carbon Nanotubes/Polypyrrole Composite Thin Film Electrodes: Investigation of Interfacial Ion Exchange Behavior

2021 ◽  
Vol 5 (1) ◽  
pp. 25
Author(s):  
Freddy Escobar-Teran ◽  
Hubert Perrot ◽  
Ozlem Sel
Keyword(s):  
Thin Film ◽  
Carbon Nanotubes ◽  
Electrochemical Impedance ◽  
Composite Thin Film ◽  
Single Wall Carbon Nanotubes ◽  
Potential Range ◽  
Porous Network ◽  
Moderate Amount ◽  
Single Wall Carbon ◽  
Thin Film Electrodes

Single-wall carbon nanotubes/polypyrrole (SWCNT/PPy) composite thin-film electrodes were prepared by electrodeposition of the pyrrole monomer on a porous network made of SWCNT bundles. Electrode/electrolyte interface, which is intimately related to the pseudocapacitive charge storage behavior, is investigated by using coupled electrogravimetric methods (electrochemical quartz crystal microbalance (EQCM) and its coupling with electrochemical impedance spectroscopy, Ac-electrogravimetry), in a 0.5 M NaCl electrolyte (pH = 7). Our results show that the range of usable potential is greater for composite SWCNT/PPy films than for SWCNT films, which should allow a higher storage capacity to be obtained. This effect is also confirmed by mass variation measurements via EQCM. The mass change (corresponding to the amount of (co)electroadsorbed species) obtained with composite SWCNT/PPy films is four times greater than that observed for pristine SWCNT films if the same potential range is examined. The permselectivity is also greatly improved in the case of composite SWCNT/PPy films compared to SWCNT films; the former shows mainly cation exchange preference. The quantities of anions estimated by Ac-electrogravimetric measurements are much lower in the case of composites. This corroborates the better permselectivity of these composite SWCNT/PPy films even with a moderate amount of PPy.

Using unsorted single-wall carbon nanotubes to enhance mobility of diketopyrrolopyrrole-quarterthiophene copolymer in thin-film transistors

2014 ◽  
Vol 15 (11) ◽  
pp. 2639-2646 ◽  
Author(s):  
Chad Smithson ◽  
Yiliang Wu ◽  
Tony Wigglesworth ◽  
Sandra Gardner ◽  
Shiping Zhu ◽  
...  
Keyword(s):  
Thin Film ◽  
Carbon Nanotubes ◽  
Thin Film Transistors ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon

Performance Enhancement of Thin-Film Transistors by Using High-Purity Semiconducting Single-Wall Carbon Nanotubes

2009 ◽  
Vol 2 ◽  
pp. 071601 ◽  
Author(s):  
Shunjiro Fujii ◽  
Takeshi Tanaka ◽  
Yasumitsu Miyata ◽  
Hiroshi Suga ◽  
Yasuhisa Naitoh ◽  
...  
Keyword(s):  
Thin Film ◽  
Carbon Nanotubes ◽  
High Purity ◽  
Thin Film Transistors ◽  
Performance Enhancement ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon

Thin-film metal catalyst for the production of multi-wall and single-wall carbon nanotubes

2004 ◽  
Vol 96 (8) ◽  
pp. 4456-4462 ◽  
Author(s):  
R. G. Lacerda ◽  
K. B. K. Teo ◽  
A. S. Teh ◽  
M. H. Yang ◽  
S. H. Dalal ◽  
...  
Keyword(s):  
Thin Film ◽  
Carbon Nanotubes ◽  
Single Wall Carbon Nanotubes ◽  
Metal Catalyst ◽  
Single Wall Carbon

Thin-film transistors using DNA-wrapped semiconducting single-wall carbon nanotubes with selected chiralities

2015 ◽  
Vol 8 (10) ◽  
pp. 105101 ◽  
Author(s):  
Yuki Kuwahara ◽  
Fumiyuki Nihey ◽  
Shigekazu Ohmori ◽  
Takeshi Saito
Keyword(s):  
Thin Film ◽  
Carbon Nanotubes ◽  
Thin Film Transistors ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon

Photovoltaic Devices Based on Single Wall Carbon Nanotubes

2009 ◽  
Vol 1210 ◽  
Author(s):  
Zhongrui Li ◽  
Viney Saini ◽  
Shawn Edward Bourdo ◽  
Liqiu Zheng ◽  
Enkeleda Dervishi ◽  
...  
Keyword(s):  
Thin Film ◽  
Carbon Nanotubes ◽  
Solar Cells ◽  
Carrier Transport ◽  
Single Wall Carbon Nanotubes ◽  
Chemical Doping ◽  
Single Wall Carbon ◽  
Aspect Ratios ◽  
Conversion Materials ◽  
P Type

AbstractSingle-wall carbon nanotubes (SWNTs) are potentially an attractive material for PV applications due to their many unique structural and electrical properties. SWNTs can be directly configured as energy conversion materials to fabricate thin-film solar cells, with nanotubes serving as both photogeneration sites and charge carriers collecting/transport layers. SWNTs can be modified into either p-type conductor through chemical doping (like thionyl chloride, or just exposure to air) or n-type conductor through polymer (like polyethylene imine) functionalization. The solar cells consist of either a semitransparent thin film of p-type nanotubes deposited on an n-type silicon wafer or a semitransparent thin film of n-type SWNT on p-type substrate to create high-density p-n heterojunctions between nanotubes and silicon substrate to favor charge separation and extract electrons and holes. The high aspect ratios and large surface area of nanotubes can be beneficial to exciton dissociation and charge carrier transport thus improving the power conversion efficiency.

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