Streamlined microwave-assisted preparation of narrow-bandgap conjugated polymers for high-performance bulk heterojunction solar cells
Abstract
The most efficient plastic solar cells comprise a blend of conjugated polymer and a suitable electron acceptor, typically a fullerene derivative. Therefore narrow-bandgap conjugated polymers are currently sought for the fabrication of such devices. A significant challenge is being able to predict device function and performance from consideration of the molecular connectivity and dimensions of the partners within the active layer. Improved chemical syntheses are therefore required to make structurally varied polymers and enable the delineation of structure-function relationships with the aim of improving power conversion efficiencies. Here, we demonstrate that microwave heating in combination with the screening of comonomer reactant ratios can be used to obtain donor-acceptor copolymers with high average molecular weights and properties that make them suitable for solar cell incorporation. Furthermore, we highlight the importance of high molecular weight and the contribution of solubilizing side groups in determining the final device properties.
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It has been proven in many cases that polymers with a high molecular weight could achieve a relatively high PCE.
“It has been proven in many cases that polymers with a high molecular weight could achieve a relatively high PCE. 31 -34”
From Recent progress in porphyrin-based materials for organic solar cells (2018) · cites this paper as [31]
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Self-citation
- Authors
- Coffin, R. C., Peet, J., Rogers, J., & Bazan, G. C.
- Affiliations
- University of California, Santa Barbara (US)
- Corresponding author
- Bazan, Guillermo C.
- ORCID
- Bazan, Guillermo C.
- Venue
- Nature Chemistry
- Published
- 2009-10-18
- Volume
- 1
- Issue
- 8
- Pages
- 657-661
- ISSN
- 1755-4330 (ISSN-L)
- 1755-4349
- OpenAlex
- W2033562953
- Cited by
- 597
- References
- 38
- Citations by year
- 2026: 3 · 2025: 6 · 2024: 13 · 2023: 7 · 2022: 7 · 2021: 9 · 2020: 12 · 2019: 16 · 2018: 25 · 2017: 26 · 2016: 43 · 2015: 50 · 2014: 86 · 2013: 94 · 2012: 93
- FWCI
- 52.57
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Nature Chemistry (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Air Force Office of Scientific Research
- Institute for Collaborative Biotechnologies
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Electronics and Photovoltaics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Light-Emitting Diodes Research
- Physical Sciences › Materials Science › Materials Chemistry › Block Copolymer Self-Assembly
- Keywords
- microwave-assisted synthesis, donor-acceptor polymers, bulk heterojunction solar cells, polymer solar cells, fullerene acceptors, molecular weight, blend morphology, structure-function relationship, power conversion efficiency
- MeSH terms
- Electric Conductivity, Electrons, Microwaves, Molecular Weight, Polymers, Electric Power Supplies, Solar Energy
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