TY - JOUR
T1 - Highly air- and moisture-stable hole-doped carbon nanotube films achieved using boron-based oxidant
AU - Funahashi, Kazuma
AU - Tanaka, Naoki
AU - Shoji, Yoshiaki
AU - Imazu, Naoki
AU - Nakayama, Ko
AU - Kanahashi, Kaito
AU - Shirae, Hiroyuki
AU - Noda, Suguru
AU - Ohta, Hiromichi
AU - Fukushima, Takanori
AU - Takenobu, Taishi
N1 - Funding Information:
The authors thank Meijo Nano Carbon Co., Ltd. for providing us with the MEIJO eDIPS CNTs. K.F., K.K., and H.S. acknowledge the Leading Graduate Program in Science and Engineering, Waseda University, under the Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT). T.T. was partially supported by Grants-in-Aid from MEXT (JP26102012 "π-System Figuration", JP26107533, JP25000003). H.O. was supported by JSPS KAKENHI (JP25246023, JP25106007) and the Asahi Glass Foundation. T.F. was supported by a Grant-in-Aid for Scientific Research on Innovative Areas (JP26102008 "π-System Figuration") and "Dynamic Alliance for Open Innovation Bridging Human, Environment and Materials" from MEXT. Y.S. was supported by the Challenging Research Award from Tokyo Institute of Technology. This work was also supported in part by the Network Joint Research Center for Materials and Devices.
Publisher Copyright:
© 2017 The Japan Society of Applied Physics.
PY - 2017/3
Y1 - 2017/3
N2 - 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%.
AB - 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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U2 - 10.7567/APEX.10.035101
DO - 10.7567/APEX.10.035101
M3 - Article
AN - SCOPUS:85014088927
SN - 1882-0778
VL - 10
JO - Applied Physics Express
JF - Applied Physics Express
IS - 3
M1 - 035101
ER -