Enhancing Indacenodithiophene Acceptor Crystallinity via Substituent Manipulation Increases Organic Solar Cell Efficiency

Enhancing Indacenodithiophene Acceptor Crystallinity via Substituent Manipulation Increases Organic Solar Cell Efficiency

The post-fullerene indacenodithiophene acceptor ITIC is a highly effective n-type component of high-performance bulk-heterojunction (BHJ) polymer solar cells (PSCs) for reasons that are not well-understood. Here, the impact of the ITIC alkyl substituent architecture on PSC active layer film morpholo...

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Veröffentlicht in:Chemistry of materials 2017-12, Vol.29 (24), p.10294-10298
Hauptverfasser: Aldrich, Thomas J, Swick, Steven M, Melkonyan, Ferdinand S, Marks, Tobin J
Format: Artikel
Sprache:eng
Schlagworte:
bio-inspired
catalysis (heterogeneous)
catalysis (homogeneous)
charge transport
electrodes - solar, defects
hydrogen and fuel cells
materials and chemistry by design
membrane
optics
photosynthesis (natural and artificial)
solar (fuels)
solar (photovoltaic)
SOLAR ENERGY
spin dynamics
synthesis (novel materials)
synthesis (self-assembly)
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Zusammenfassung:The post-fullerene indacenodithiophene acceptor ITIC is a highly effective n-type component of high-performance bulk-heterojunction (BHJ) polymer solar cells (PSCs) for reasons that are not well-understood. Here, the impact of the ITIC alkyl substituent architecture on PSC active layer film morphology, charge transport, and photovoltaic (PV) performance is investigated with the donor polymers PBDB-T and PBDB-TF. On progressing from n-propyl to n-hexyl to n-nonyl ITIC substituents, PSC power conversion efficiency (PCE) increases from
ISSN:0897-4756
1520-5002
DOI:10.1021/acs.chemmater.7b04616