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Title
Japanese: 
English:Highly air- and moisture-stable hole-doped carbon nanotube films achieved using boron-based oxidant 
Author
Japanese: Kazuma Funahashi, 田中直樹, 庄子良晃, Naoki Imazu, Ko Nakayama, Kaito Kanahashi, Hiroyuki Shirae, 野田優, Hiromichi Ohta, 福島孝典, 竹延 大志.  
English: Kazuma Funahashi, Naoki Tanaka, Yoshiaki Shoji, Naoki Imazu, Ko Nakayama, Kaito Kanahashi, Hiroyuki Shirae, Suguru Noda, Hiromichi Ohta, Takanori Fukushima, Taishi Takenobu.  
Language English 
Journal/Book name
Japanese: 
English:Applied Physics Express 
Volume, Number, Page vol. 10        p. 035101
Published date Feb. 2, 2017 
Publisher
Japanese: 
English:IOP Science 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL http://iopscience.iop.org/article/10.7567/APEX.10.035101/meta;jsessionid=EB05A5E6BB9415B2A9F234BE9550EFA2.c4.iopscience.cld.iop.org
 
DOI https://doi.org/10.7567/APEX.10.035101
Abstract Hole doping into carbon nanotubes can be achieved. However, the doped nanotubes usually suffer from the lack of air and moisture stability, thus, they eventually lose their improved electrical properties. Here, we report that a salt of the two-coordinate boron cation Mes2B+ (Mes: 2,4,6-trimethylphenyl group) can serve as an efficient hole-doping reagent to produce nanotubes with markedly high stability in the presence of air and moisture. Upon doping, the resistances of the nanotubes decreased, and these states were maintained for one month in air. The hole-doped nanotube films showed a minimal increase in resistance even upon humidification with a relative humidity of 90%.

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