| DOI | Resolve DOI: https://doi.org/10.1016/j.tsf.2020.138300 |
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| Author | Search for: He, Yinghui1; Search for: Aïch, Badrou Reda1; Search for: Lu, Jianping1ORCID identifier: https://orcid.org/0000-0003-3152-7510; Search for: Alem, Salima1; Search for: Lang, Stephen1; Search for: Movileanu, Raluca1; Search for: Baribeau, Jean-Marc1; Search for: Tao, Ye1 |
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| Affiliation | - National Research Council of Canada. Advanced Electronics and Photonics
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| Format | Text, Article |
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| Subject | polymer semiconductors; fluorinated bithiophene; organic thin film transistors; organic solar cells; fluorine substitution positions |
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| Abstract | The synthesis of 4,4ʹ-difluoro-2,2ʹ-bithiophene is reported and an alternating donor-acceptor copolymer of this moiety and diketopyrrolopyrrole has been prepared. This polymer has a lower highest occupied molecular orbital than its non-fluorinated analogue polymer. Organic thin film transistors based on this polymer showed p-type charge transport behavior and a hole mobility of 0.21 cm² V⁻¹ s⁻¹ in bottom-gate bottom-contact devices. Organic solar cells using this polymer as donor and [6,6]-Phenyl-C₇₁-butyric acid methyl ester as acceptor achieved a power conversion efficiency of 3.4% with a high fill factor of 69%. Our morphology analysis showed that there was a lack of long-range ordered structure in the neat polymer thin film, which could cause the inferior device performance. |
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| Publication date | 2020-08-20 |
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| Publisher | Springer |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 47d8c741-2641-43b0-8c12-1199d2b81148 |
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| Record created | 2021-12-02 |
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| Record modified | 2021-12-02 |
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