Highly efficient bilateral doping of single-walled carbon nanotubes
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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8
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Journal of Materials Chemistry C, Volume 9, issue 13, pp. 4514-4521
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 °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 Ω 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.Description
Funding Information: The experimental part of the research was supported by the Russian Science Foundation (No. 17-19-01787). Theoretical work was supported by the Ministry of Education and Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST ‘‘MISiS’’. This work was supported by the Ministry of Science and Higher Education of the Russian Federation (project no. FZSR-2020-0007 in the frame-work of the state assignment no. 075-03-2020-097/1). A. P. T. acknowledges the EDUFI Fellowship (No. TM-19-11079) from the Finnish National Agency for Education and the Magnus Ehrnrooth Foundation (the Finnish Society of Sciences and Letters) for personal financial support. H. I., J. K., and K. M. thank the Austrian Science Fund (FWF) for funding under project no. I3181-N36. Publisher Copyright: © 2021 The Royal Society of Chemistry. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
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Goldt, A E, Zaremba, O T, Bulavskiy, M O, Fedorov, F S, Larionov, K V, Tsapenko, A P, Popov, Z I, Sorokin, P, Anisimov, A S, Inani, H, Kotakoski, J, Mustonen, K & Nasibulin, A G 2021, 'Highly efficient bilateral doping of single-walled carbon nanotubes', Journal of Materials Chemistry C, vol. 9, no. 13, pp. 4514-4521. https://doi.org/10.1039/d0tc05996j