In situ optical spectroelectrochemistry of single-walled carbon nanotube thin films

0310179 - ÚFCH JH 2009 RIV DE eng J - Journal Article
Zukalová, Markéta - Tarábek, Ján - Kalbáč, Martin - Kavan, Ladislav - Dunsch, L.
In situ optical spectroelectrochemistry of single-walled carbon nanotube thin films.
[Optická spektroelektrochemie in situ měřená na tenkém filmu z jednostěnných uhlíkových nanotrubic.]
Journal of Solid State Electrochemistry. Roč. 12, č. 10 (2008), s. 1279-1284. ISSN 1432-8488. E-ISSN 1433-0768
R&D Projects: GA MŠMT LC510
Institutional research plan: CEZ:AV0Z40400503
Keywords : uv-vis spectroelectrochemistry * cyclic voltammetry * single-walled carbon nanotubes * thin films * doping
Subject RIV: CG - Electrochemistry
Impact factor: 1.597, year: 2008

A detailed study is presented on the optical absorption of thin films of single wall carbon nanotubes (SWNT). The procedure for the preparation of free-standing semitransparent films of SWNT is used for the fabrication of a working electrode for transmission optical spectroelectrochemistry. The analysis of the potential dependent spectroscopic response of the SWNT film benefits from the widest possible electrochemical window, in which the charging of SWNT can safely be investigated. This electrochemical window is not limited by parasitic electrochemistry and/or galvanic breakdown reactions occurring at supporting electrode materials such as indium-tin oxide conducting glass or semitransparent Pt film, which were employed in earlier studies. Electrochemical doping of SWNT is observable at the optical absorptions, which are assigned to allowed electronic transitions between van Hove singularities in the density of states of SWNT.

Byla provedena detailní studie optických absorpčních vlastností tenkých filmů z jednostěnných uhlíkových nanotrubic. Dále byly studovány změny optické absorpce zmíněných filmů v závislosti na vloženém potenciálu.
Permanent Link: http://hdl.handle.net/11104/0162120