Highly efficient bilateral doping of single-walled carbon nanotubes

Author(s)
Anastasia E. Goldt, Orysia T. Zaremba, Mikhail O. Bulavskiy, Fedor S. Fedorov, Konstantin Larionov, Alexey P. Tsapenko, Zakhar Popov, Pavel Sorokin, Anton S. Anisimov, Heena Inani, Jani Kotakoski, Kimmo Mustonen, Albert G. Nasibulin
Abstract

A boost in the development of flexible and wearable electronics facilitates the design of new materials to be applied as transparent conducting films (TCFs). Although single-walled carbon nanotube (SWCNT) films are the most promising candidates for flexible TCFs, they still do not meet optoelectronic requirements demanded for their successful industrial integration. In this study, we proposed and thoroughly investigated a new approach that comprises simultaneous bilateral (outer and inner surface) SWCNT doping after their opening by thermal treatment at 400 degrees C under an ambient air atmosphere. Doping by a chloroauric acid (HAuCl4) ethanol solution allowed us to achieve the record value of equivalent sheet resistance of 31 +/- 4 omega sq(-1) at a transmittance of 90% in the middle of the visible spectrum (550 nm). The strong p-doping was examined by open-circuit potential (OCP) measurements and confirmed by ab initio calculations demonstrating a downshift of the Fermi level of around 1 eV for the case of bilateral doping.

Organisation(s)
Physics of Nanostructured Materials
External organisation(s)
Skolkovo Institute of Science and Technology, National University of Science and Technology (MISiS), Moscow Institute of Physics and Technology, Aalto University, Canatu Ltd, Russian Academy of Sciences
Journal
Journal of Materials Chemistry C
Volume
9
Pages
4514-4521
No. of pages
8
ISSN
2050-7526
DOI
https://doi.org/10.1039/d0tc05996j
Publication date
04-2021
Peer reviewed
Yes
Austrian Fields of Science 2012
103018 Materials physics, 102009 Computer simulation
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/highly-efficient-bilateral-doping-of-singlewalled-carbon-nanotubes(7c346c04-bcdd-42e2-b23d-1c61576d9a53).html