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Influence of different copolymer sequences in low band gap polymers on their performance in organic solar cells.
- Source :
-
Journal of Polymer Science Part A: Polymer Chemistry . Apr2012, Vol. 50 Issue 8, p1622-1635. 14p. - Publication Year :
- 2012
-
Abstract
- The chemical design of a polymer can be tailored by a random or a block sequence of the comonomers in order to influence the properties of the final material. In this work, two sequences, PCPDTBT and F8BT (F8), were polymerized to form a block or a random copolymer. Differences between the various polymers were examined by exploring the surface topography and charge carrier mobility. A distinct surface texture and a higher charge carrier mobility was found for the block copolymer with respect to the other materials. Solar cells were prepared with polymer:PC71BM blend active layers and the best performance of up to 2% was found for the block copolymer, which was a direct result of the fill factor. Overall, the sequences of different copolymers for solar cell applications were varied and a positive impact on efficiency was found when the block copolymer structure was utilized. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012 [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0887624X
- Volume :
- 50
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Journal of Polymer Science Part A: Polymer Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 72679536
- Full Text :
- https://doi.org/10.1002/pola.25933