Environmental stability of ferrocene filled in purely metallic single-walled carbon nanotubes

Author(s)
Markus Sauer, Hidetsugu Shiozawa, Paola Ayala, Georgina Ruiz-Soria, Xianjie Liu, Kazuhiro Yanagi, Hiromichi Kataura, Stefan Krause, Thomas Pichler
Abstract

Although the possibility of using metallocenes acting as n-type dopants for metallicity mixed and separated single-walled carbon nanotubes (SWCNT) has been proven, the question of usability for real-life applications still needs to be addressed. The most important factor for their applicability is the stability of the doping outside a vacuum environment. To clarify this issue we have conducted a long-term study on purely metallic SWCNTs after being filled with ferrocene and compared it to results after prolonged exposure to air, demonstrating a decomposition of about half of the filling material leaving a lower but stable doping state. The successful conversion to double-walled carbon nanotubes by high-temperature annealing yielding p-type doped hybrid structures is evidenced additionally. These results let us conclude that SWCNTs filled with metallocenes are an ideal n, or p-type doped starting material for applied electronics based on graphitic structures.

Organisation(s)
Electronic Properties of Materials
External organisation(s)
Tokyo Metropolitan University, National Institute of Advanced Industrial Science and Technology (AIST), Helmholtz-Zentrum Berlin für Materialien und Energie
Journal
Physica Status Solidi. B: Basic Research
Volume
250
Pages
2599-2604
No. of pages
6
ISSN
0370-1972
DOI
https://doi.org/10.1002/pssb.201300124
Publication date
12-2013
Peer reviewed
Yes
Austrian Fields of Science 2012
103018 Materials physics
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/environmental-stability-of-ferrocene-filled-in-purely-metallic-singlewalled-carbon-nanotubes(377a1a24-2fe5-4714-90ee-8c9b37260ed4).html