Photo-induced conductivity changes in n-doped poly(3-octylthiophene)(P3OT)/single-walled carbon nanotube (SWNT) composites have been examined. When exposed simultaneously to ultraviolet (UV) light and oxygen, carbon nanotubes exhibit photo-induced oxidation. An analysis of n-doped P3OT/SWNT composite exposed to oxygen/UV shows that conductivity increases and that charge carrier mobility is governed by the formation of a charge transfer complex. Possible sites of oxygen photoadsorption and its implications on the observed electrical properties of nanocomposite are considered. (c) 2004 Elsevier B.V. All rights reserved.
Interaction of oxygen with nanocomposites made of n-type conducting polymers and-carbon nanotubes: role of charge transfer complex formation between nanotubes and poly(3-octylthiophene) / Valentini, L; Armentano, I; Kenny, Jm; Bidali, S; Mariani, Alberto. - In: THIN SOLID FILMS. - ISSN 0040-6090. - 476:1(2005), pp. 162-167. [10.1016/j.tsf.2004.09.051]
Interaction of oxygen with nanocomposites made of n-type conducting polymers and-carbon nanotubes: role of charge transfer complex formation between nanotubes and poly(3-octylthiophene)
MARIANI, Alberto
2005-01-01
Abstract
Photo-induced conductivity changes in n-doped poly(3-octylthiophene)(P3OT)/single-walled carbon nanotube (SWNT) composites have been examined. When exposed simultaneously to ultraviolet (UV) light and oxygen, carbon nanotubes exhibit photo-induced oxidation. An analysis of n-doped P3OT/SWNT composite exposed to oxygen/UV shows that conductivity increases and that charge carrier mobility is governed by the formation of a charge transfer complex. Possible sites of oxygen photoadsorption and its implications on the observed electrical properties of nanocomposite are considered. (c) 2004 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
