Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 17, 2005
Previous Article Next Article

Influence of the solvent on the aggregation of a poly(3-hexylthiophene)–quinquethiophene-S,S-dioxide blend at surfaces: an SFM study

Author affiliations

Abstract

We describe a study on the morphology of thin films processed from equiweight solution blends of the electron donor regioregular poly(3-hexylthiophene) (P3HT) with the electron acceptor 3″-methyl,4″-hexyl-2,2′:5′,2″:5″,2‴:5‴,2′‴-quinquethiophene-1″,1″-dioxide (T5HOM). Spin-coated films supported on a glass/ITO/PEDOT : PSS substrate have been prepared with systematic variation of the type of solvent. Scanning Force Microscopy investigations revealed that, depending on the solvent type, different kinds of complex phase segregated morphologies on the sub-micrometer scale can be obtained. The formation of either lateral or vertical phase segregated structures is primarily governed by the different tendency of the two molecular systems to self-aggregate in the given solvent. A minor role can also be ascribed to an interfacial recognition phenomenon. Among the different architectures obtained, phase separated T5OHM crystals with sizes of hundreds of nanometers embedded in a P3HT grainy amorphous matrix seems to be the most suitable candidate for photovoltaic applications.

Graphical abstract: Influence of the solvent on the aggregation of a poly(3-hexylthiophene)–quinquethiophene-S,S-dioxide blend at surfaces: an SFM study

Back to tab navigation

Supplementary files

Article information


Submitted
30 Nov 2004
Accepted
25 Jan 2005
First published
08 Feb 2005

J. Mater. Chem., 2005,15, 1704-1707
Article type
Paper

Influence of the solvent on the aggregation of a poly(3-hexylthiophene)–quinquethiophene-S,S-dioxide blend at surfaces: an SFM study

G. Ridolfi, L. Favaretto, G. Barbarella, P. Samorì and N. Camaioni, J. Mater. Chem., 2005, 15, 1704
DOI: 10.1039/B418109C

Search articles by author

Spotlight

Advertisements