Para acceder a los documentos con el texto completo, por favor, siga el siguiente enlace: http://hdl.handle.net/2117/26717

High-frequency impedance of single-walled carbon nanotube networks on transparent flexible substrate
Iqbal, Muhammad Zahir; Pérez Puigdemont, Jordi; Eom, Jonghwa; Ferrer Anglada, Núria
Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. Departament de Física Aplicada; Universitat Politècnica de Catalunya. HIPICS - Grup de Circuits i Sistemes Integrats d'Altes Prestacions; Universitat Politècnica de Catalunya. CEMAD - Caracterització Elèctrica de Materials i Dispositius
Transparent and flexible networks with randomly distributed single-walled carbon nanotubes (SWCNTs) are emerging as novel materials for various applications, particularly as electronic materials. We investigate the frequency-dependent impedance measurements up to 20 GHz, of single-walled carbon nanotube networks on transparent and flexible substrates, by using two different techniques: two probe and Corbino reflectometry setups. The thickness and roughness of the thin film of SWCNT are examined by AFM. The impedance measurements show the cut-off frequency increases with increasing the density of SWCNT. The log-log plot of low frequency impedance as a function of the cut-off frequency shows the same slope in both measuring techniques. The slope is independent on sample geometries, which is characteristic of a totally disordered system. The cut-off frequencies observed by the Corbino reflectometry technique are 3 orders of magnitude higher than those observed by two-probe technique even for the same SWCNTs density network. (C) 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Peer Reviewed
Àrees temàtiques de la UPC::Física::Física de l’estat sòlid::Dispositius de l’estat sòlid
Nanotubes
Impedance (Electricity)
Electric conductivity
ac conductivity
carbon nanotube networks
cut-off frequency
electrical impedance
THIN-FILMS
ELECTRONICS
Nanotubs
Impedància (Electricitat)
Conductivitat elèctrica
info:eu-repo/semantics/publishedVersion
Artículo
         

Mostrar el registro completo del ítem

Documentos relacionados

Otros documentos del mismo autor/a

Iqbal, Muhammad Zahir; Eom, J.; Pérez Puigdemont, Jordi; Ferrer Anglada, Núria
Ferrer Anglada, Núria; Iqbal, Muhammad Zahir; Pérez Puigdemont, Jordi; Figueras, Jordi; Roth, Segmar
Abiad Monge, Aida; Pérez Puigdemont, Jordi; Ferrer Anglada, Núria; Roth, Segmar
Pérez Puigdemont, Jordi; Calomarde Palomino, Antonio; Moll Echeto, Francisco de Borja