Achieving High Alignment of Conjugated Polymers by Controlled Dip‐Coating
Abstract Realizing high polymer chain orientation and ordered thin‐film microstructures is beneficial for efficient charge transport of conjugated polymers. However, achieving a high alignment degree remains a challenge due to the sensitive nature of polymers to the processing conditions. By simply...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2020-06-01
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| Series: | Advanced Electronic Materials |
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| Online Access: | https://doi.org/10.1002/aelm.202000080 |
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| author | Qi‐Yi Li Ze‐Fan Yao Yang Lu Song Zhang Zachary Ahmad Jie‐Yu Wang Xiaodan Gu Jian Pei |
| author_facet | Qi‐Yi Li Ze‐Fan Yao Yang Lu Song Zhang Zachary Ahmad Jie‐Yu Wang Xiaodan Gu Jian Pei |
| author_sort | Qi‐Yi Li |
| collection | DOAJ |
| description | Abstract Realizing high polymer chain orientation and ordered thin‐film microstructures is beneficial for efficient charge transport of conjugated polymers. However, achieving a high alignment degree remains a challenge due to the sensitive nature of polymers to the processing conditions. By simply varying concentrations during a dip‐coating method, the component of polymer aggregates that adopt the planar backbones is enlarged and the ensuing assembly process is promoted. Herein, highly oriented polymer thin films of an isoindigo‐based conjugated polymer (PII‐2T) are prepared to enhance polymer orientation resulting in a drastic booming in carrier mobilities of organic field‐effect‐transistors (OFETs). The maximum mobility from aligned polymer films increases by up to 8.3 cm2 V−1 s−1, which is tenfold beyond the value evaluated from the unaligned direction or traditional spin‐coated samples. The enhanced orientation can also reduce the adverse effects of the contact resistance and facilitate charge transport in transistors. This work demonstrates that the highly aligned conjugated polymer films can be approached by the dip‐coating method while offers a latent cornerstone toward understanding the critical role of processing‐related parameters in determining morphology of solution‐coated thin films. |
| format | Article |
| id | doaj-art-ece89f22aab044bdb484c717395f2ddb |
| institution | DOAJ |
| issn | 2199-160X |
| language | English |
| publishDate | 2020-06-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Electronic Materials |
| spelling | doaj-art-ece89f22aab044bdb484c717395f2ddb2025-08-20T03:09:23ZengWiley-VCHAdvanced Electronic Materials2199-160X2020-06-0166n/an/a10.1002/aelm.202000080Achieving High Alignment of Conjugated Polymers by Controlled Dip‐CoatingQi‐Yi Li0Ze‐Fan Yao1Yang Lu2Song Zhang3Zachary Ahmad4Jie‐Yu Wang5Xiaodan Gu6Jian Pei7Beijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Polymer Chemistry and Physics of Ministry of Education Center of Soft Matter Science and Engineering College of Chemistry and Molecular Engineering Peking University Beijing 100871 ChinaBeijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Polymer Chemistry and Physics of Ministry of Education Center of Soft Matter Science and Engineering College of Chemistry and Molecular Engineering Peking University Beijing 100871 ChinaBeijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Polymer Chemistry and Physics of Ministry of Education Center of Soft Matter Science and Engineering College of Chemistry and Molecular Engineering Peking University Beijing 100871 ChinaSchool of Polymer Science and Engineering The University of Southern Mississippi Hattiesburg MS 39406 USASchool of Polymer Science and Engineering The University of Southern Mississippi Hattiesburg MS 39406 USABeijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Polymer Chemistry and Physics of Ministry of Education Center of Soft Matter Science and Engineering College of Chemistry and Molecular Engineering Peking University Beijing 100871 ChinaSchool of Polymer Science and Engineering The University of Southern Mississippi Hattiesburg MS 39406 USABeijing National Laboratory for Molecular Sciences (BNLMS) Key Laboratory of Polymer Chemistry and Physics of Ministry of Education Center of Soft Matter Science and Engineering College of Chemistry and Molecular Engineering Peking University Beijing 100871 ChinaAbstract Realizing high polymer chain orientation and ordered thin‐film microstructures is beneficial for efficient charge transport of conjugated polymers. However, achieving a high alignment degree remains a challenge due to the sensitive nature of polymers to the processing conditions. By simply varying concentrations during a dip‐coating method, the component of polymer aggregates that adopt the planar backbones is enlarged and the ensuing assembly process is promoted. Herein, highly oriented polymer thin films of an isoindigo‐based conjugated polymer (PII‐2T) are prepared to enhance polymer orientation resulting in a drastic booming in carrier mobilities of organic field‐effect‐transistors (OFETs). The maximum mobility from aligned polymer films increases by up to 8.3 cm2 V−1 s−1, which is tenfold beyond the value evaluated from the unaligned direction or traditional spin‐coated samples. The enhanced orientation can also reduce the adverse effects of the contact resistance and facilitate charge transport in transistors. This work demonstrates that the highly aligned conjugated polymer films can be approached by the dip‐coating method while offers a latent cornerstone toward understanding the critical role of processing‐related parameters in determining morphology of solution‐coated thin films.https://doi.org/10.1002/aelm.202000080carrier mobilitycharge transport anisotropydip‐coatingorganic field‐effect transistors |
| spellingShingle | Qi‐Yi Li Ze‐Fan Yao Yang Lu Song Zhang Zachary Ahmad Jie‐Yu Wang Xiaodan Gu Jian Pei Achieving High Alignment of Conjugated Polymers by Controlled Dip‐Coating Advanced Electronic Materials carrier mobility charge transport anisotropy dip‐coating organic field‐effect transistors |
| title | Achieving High Alignment of Conjugated Polymers by Controlled Dip‐Coating |
| title_full | Achieving High Alignment of Conjugated Polymers by Controlled Dip‐Coating |
| title_fullStr | Achieving High Alignment of Conjugated Polymers by Controlled Dip‐Coating |
| title_full_unstemmed | Achieving High Alignment of Conjugated Polymers by Controlled Dip‐Coating |
| title_short | Achieving High Alignment of Conjugated Polymers by Controlled Dip‐Coating |
| title_sort | achieving high alignment of conjugated polymers by controlled dip coating |
| topic | carrier mobility charge transport anisotropy dip‐coating organic field‐effect transistors |
| url | https://doi.org/10.1002/aelm.202000080 |
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