Investigations of self-organisation in composites of poly(3-hexylthiophene) on single-walled carbon nanotubes designed for use in photovoltaic applications
Waclawik, Eric R., Bell, John M., Goh, Roland G., & Motta, Nunzio (2006) Investigations of self-organisation in composites of poly(3-hexylthiophene) on single-walled carbon nanotubes designed for use in photovoltaic applications. In Nicolau, Ian (Ed.) SPIE "BioMEMS and Nanotechnology II", 11–14 December 2005, Brisbane.
A detailed study of poly(alkylthiophene) self-assembly and organization on single-walled carbon nanotubes (SWNTs) is presented. Experimental evidence for self-assembly and organization of regioregular poly(3-hexyl thiophene) (rrP3HT) on single-walled carbon nanotubes was obtained using scanning tunneling microscopy (STM) and transmission electron microscopy (TEM). TEM images of drop-cast rrP3HT/SWNT composites displayed strong evidence that SWNTs were isolated from each other in a polymer matrix and coated with between 1-3 layers rrP3HT. STM measurements of adsorbed monolayers of rrP3HT on SWNT surfaces were compared to rrP3HT monolayer deposition on highly ordered pyrolytic graphite (HOPG) surfaces. The results show that average inter-lamellar distances of adsorbed polymer are greater for rrP3HT monolayers adsorbed onto the curved surfaces of SWNTs than on the flat surfaces of HOPG samples. Analysis of STM images yielded the chiral angles at which the thiophene polymer chains wrap around individual carbon nanotubes (41-48º with respect to nanotube axis) while the interchain spacings of adsorbed macromolecules was 1.68 ± 0.02 nm. Comparisons between the native polymer deposited on graphite and the composite structure confirmed that the presence of carbon nanotubes in rrP3HT produces a material with a high degree of order at the molecular level. This high level of order and close coupling of the two components of the composite are prerequisites for its use as the active layer of an organic photovoltaic.
Impact and interest:
Citation counts are sourced monthly from and citation databases.
These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.
Citations counts from theindexing service can be viewed at the linked Google Scholar™ search.
Full-text downloads displays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.
|Item Type:||Conference Paper|
|Keywords:||Nanotubes, Polymers, P3HT, Solar Cells|
|Subjects:||Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > ORGANIC CHEMISTRY (030500) > Physical Organic Chemistry (030505)
Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > CONDENSED MATTER PHYSICS (020400) > Surfaces and Structural Properties of Condensed Matter (020406)
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering|
|Copyright Owner:||Copyright 2006 SPIE|
|Copyright Statement:||Reproduced in accordance with the copyright policy of the publisher.|
|Deposited On:||20 Sep 2006|
|Last Modified:||29 Feb 2012 13:16|
Repository Staff Only: item control page