Side-Chain Fluorination: An Effective Approach to Achieving High-Performance All-Polymer Solar Cells with Efficiency Exceeding 7

Side-Chain Fluorination: An Effective Approach to Achieving High-Performance All-Polymer Solar Cells with Efficiency Exceeding 7

Side‐chain fluorination of polymers is demonstrated as a highly effective strategy to improve the efficiency of all‐polymer solar cells from 2.93% (nonfluorinated P1) to 7.13% (fluorinated P2). This significant enhancement is achieved by synergistic improvements in open‐circuit voltage, charge gener...

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Veröffentlicht in:Advanced materials (Weinheim) 2016-12, Vol.28 (45), p.10016-10023
Hauptverfasser: Oh, Jiho, Kranthiraja, Kakaraparthi, Lee, Changyeon, Gunasekar, Kumarasamy, Kim, Seonha, Ma, Biwu, Kim, Bumjoon J., Jin, Sung-Ho
Format: Artikel
Sprache:eng
Schlagworte:
all-polymer solar cells
Charge transport
Efficiency
exciton dissociation
Fluorination
high efficiency
Photovoltaic cells
Polymers
Solar cells
Strategy
Voltage
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Zusammenfassung:Side‐chain fluorination of polymers is demonstrated as a highly effective strategy to improve the efficiency of all‐polymer solar cells from 2.93% (nonfluorinated P1) to 7.13% (fluorinated P2). This significant enhancement is achieved by synergistic improvements in open‐circuit voltage, charge generation, and charge transport, as fluorination of the donor polymer optimizes the band alignment and the film morphology.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201602298