Highly efficient bilateral doping of single-walled carbon nanotubes

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

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)
2 Downloads (Pure)

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.

Original languageEnglish
Pages (from-to)4514-4521
Number of pages8
JournalJournal of Materials Chemistry C
Volume9
Issue number13
DOIs
Publication statusPublished - 7 Apr 2021
MoE publication typeA1 Journal article-refereed

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