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Solution‐Processed Bulk‐Heterojunction Solar Cells Based on Monodisperse Dendritic Oligothiophenes
Abstract
A novel family of soluble conjugated dendritic oligothiophenes (DOTs) as monodisperse 3D macromolecular architectures was characterized with respect to optical and redox properties in solution and in solid films. Band gaps of 2.5–2.2 eV, typical for organic semiconductors, were determined as well as HOMO/LUMO energy levels ideal for efficient electron transfer to acceptors such as [6,6]‐phenyl‐C 61‐butyric acid methyl ester (PCBM) identifying them as suitable materials for solar cell applications. Solution‐processed bulk‐heterojunction solar cells using DOTs as electron donor and PCBM as acceptor were prepared and investigated. High open‐circuit voltages VOC of 1.0 V and power‐conversion efficiencies up to 1.72% were obtained for the DOT‐based devices. The higher generations DOTs provide the highest efficiencies. Based on the monodispersity of the DOTs, an analysis of the molar ratio between donor and acceptor in the blended film was possible leading to an optimal value of five to six thiophene units per PCBM.
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Citations
Cited by
Small Molecule Organic Semiconductors on the Move: Promises for Future Solar Energy Technology
Mishra, A., & Bäuerle, P. (2012) · Angewandte Chemie International Edition · doi:10.1002/anie.201102326 · Cited by 1,816
Self-citationSmall molecule semiconductors for high-efficiency organic photovoltaics
Lin, Y., Li, Y., & Zhan, X. (2012) · Chemical Society Reviews · doi:10.1039/c2cs15313k · Cited by 1,751
Small Molecule Solution-Processed Bulk Heterojunction Solar Cells
Walker, B., Kim, C., & Nguyen, T.-Q. (2011) · Chemistry of Materials · doi:10.1021/cm102189g · Cited by 933
High Performance Photovoltaic Applications Using Solution-Processed Small Molecules
Chen, Y., Wan, X., & Long, G. (2013) · Accounts of Chemical Research · doi:10.1021/ar400088c · Cited by 667
Core-substituted naphthalenediimides
Sakai, N., Mareda, J., Vauthey, E., & Matile, S. (2010) · Chemical Communications · doi:10.1039/c0cc00078g · Cited by 566
Metadata
- Authors
- Ma, C., Fonrodona, M., Schikora, M. C., Wienk, M. M., Janssen, R. A. J., & Bäuerle, P.
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2008-10-21
- Volume
- 18
- Issue
- 20
- Pages
- 3323-3331
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W2105216518
- Cited by
- 219
- References
- 0
- FWCI
- 26.00
- Type
- journal article
- Language
- en
- Open access
- closed
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- Ma, C., Fonrodona, M., Schikora, M. C., Wienk, M. M., Janssen, R. A. J., & Bäuerle, P. (2008). Solution‐Processed Bulk‐Heterojunction Solar Cells Based on Monodisperse Dendritic Oligothiophenes. Advanced Functional Materials. https://doi.org/10.1002/adfm.200800584
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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