Design and Synthesis of Functionalized Regio regular Poly(3-hexylthiophene) based Copolymers and Application in polymer : fullerene Bulk Heterojunction solar cells

B.J. Campo, W.D. Oosterbaan, J. Gilot, T.J. Cleij, L. Lutsen, R.A.J. Janssen, D.J.M. Vanderzande

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

8 Citations (Scopus)

Abstract

set of novel regioregular poly(3-hexylthiophene)-based random copolymers containing varying ratios of ester functionalized alkyl side chains were synthesized using the Rieke method. The percentage of functionalized side chain varied between 10 and 50 mol% for each copolymer. Using post-polymerization reactions, the ester functions in the alkyl side chain were hydrolyzed to yield an alcohol or acid group. These groups are available for further functionalization reactions, so a wide variety of secondary functionalities may be covalently attached to the conjugated polymer. The copolymers were applied in polymer: fullerene bulk heterojunction solar cells (BHJSCs) with [6,6]-phenyl -C61-butyric acid methyl ester (PCBM) as electron acceptor. The influence of side-chain functionalities on absorption, device performance and layer morphology depends on the ratio and nature of the functionalized side chains. For a 9/1 copolymer, containing 10% of functionalized side chains, behaviour and efficiency in BHJSCs comparable to P3HT:PCBM solar cells were observed
Original languageEnglish
Title of host publicationOrganic photovoltaics X : 3 - 6 August 2009, San Diego, California, United States
EditorsZ.H. Kafafi, P.A. Lane
Place of PublicationBellingham, Wash.
PublisherSPIE
Pages74161G-1/10
ISBN (Print)9780819479051
DOIs
Publication statusPublished - 2009

Publication series

NameProceedings of SPIE
Volume7416
ISSN (Print)0277-786X

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