Doping of carbon nanotubes by halogenated solvents

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Scientific Reports, Volume 12, issue 1
Carbon nanotubes (CNTs) play a unique role in the area of flexible conductors as they have remarkably high electrical conductivity and bend easily without deformation. Consequently, CNTs are commonly deposited on substrates as conductive tracks/coatings. Halogenated solvents are often employed to facilitate the deposition process because they dry rapidly due to their high volatility. In this work, we report that halogenated solvents can dope CNTs considerably. The study showed that the use of dichloromethane, chloroform, or bromoform for the CNT deposition significantly impacts the chemical potential of the material, thereby modifying its charge transport characteristics. As a consequence, up to four-fold improvement in electrical conductivity is noted due to doping.
Funding Information: P.T., G.S. and D.J. would like to thank the National Centre for Research and Development, Poland (under the Leader program, Grant agreement LIDER/0001/L-8/16/NCBR/2017), for financial support of the research and the National Agency for Academic Exchange of Poland (under the Academic International Partnerships program, Grant agreement PPI/APM/2018/1/0004) for sponsoring an internship at Aalto University, Finland, which enabled the execution of a part of this study. G.S. would also like to acknowledge the Ministry of Science and Higher Education of Poland for financial support of scientific work from budget funds for science in the years 2019–2023 as a research project under the “Diamond Grant” program (Grant agreement 0036/DIA/201948). Pictograms in Figs. and were made by Freepik ( ) and Avogadro: an open-source molecular builder and visualization tool ( ). Publisher Copyright: © 2022, The Author(s).
Taborowska , P , Stando , G , Sahlman , M , Krzywiecki , M , Lundström , M & Janas , D 2022 , ' Doping of carbon nanotubes by halogenated solvents ' , Scientific Reports , vol. 12 , no. 1 , 7004 .