Cited by 597Organic Electronics and PhotovoltaicsOrganic Light-Emitting Diodes ResearchBlock Copolymer Self-Assembly

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Streamlined microwave-assisted preparation of narrow-bandgap conjugated polymers for high-performance bulk heterojunction solar cells

Coffin, Robert C., Peet, Jeff, Rogers, James, Bazan, Guillermo C.·2009·Nature Chemistry

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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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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
Publisher: Springer Science and Business Media LLC
Published: 2009-10-18
Volume: 1
Issue: 8
Pages: 657-661
ISSN: 1755-4330 (ISSN-L)
1755-4349
DOI: 10.1038/nchem.403
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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Streamlined microwave-assisted preparation of narrow-bandgap conjugated polymers for high-performance bulk heterojunction solar cells

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