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Side-Chain Fluorination: An Effective Approach to Achieving High-Performance All-Polymer Solar Cells with Efficiency Exceeding 7%
- Authors
- Oh, Jiho; Kranthiraja, Kakaraparthi; Lee, Changyeon; Gunasekar, Kumarasamy; Kim, Seonha; Ma, Biwu; Kim, Bumjoon J.; Jin, Sung-Ho
- Issue Date
- Dec-2016
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- all-polymer solar cells; charge transport; exciton dissociation; fluorination; high efficiency
- Citation
- ADVANCED MATERIALS, v.28, no.45, pp 10016 - 10023
- Pages
- 8
- Journal Title
- ADVANCED MATERIALS
- Volume
- 28
- Number
- 45
- Start Page
- 10016
- End Page
- 10023
- ISSN
- 0935-9648
1521-4095
- Abstract
- 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.
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