Strain-dependent charge trapping and its impact on the operational stability of polymer field-effect transistors
Abstract Despite recent dramatic improvements in the electronic characteristics of stretchable organic field-effect transistors (FETs), their low operational stability remains a bottleneck for their use in practical applications. Here, the operational stability, especially the bias-stress stability,...
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Nature Portfolio
2024-10-01
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| Series: | npj Flexible Electronics |
| Online Access: | https://doi.org/10.1038/s41528-024-00359-3 |
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| author | Sangsik Park Seung Hyun Kim Hansol Lee Kilwon Cho |
| author_facet | Sangsik Park Seung Hyun Kim Hansol Lee Kilwon Cho |
| author_sort | Sangsik Park |
| collection | DOAJ |
| description | Abstract Despite recent dramatic improvements in the electronic characteristics of stretchable organic field-effect transistors (FETs), their low operational stability remains a bottleneck for their use in practical applications. Here, the operational stability, especially the bias-stress stability, of semiconducting polymer-based FETs under various tensile strains is investigated. Analyses on the structure of stretched semiconducting polymer films and spectroscopic quantification of trapped charges within them reveal the major cause of the strain-dependent bias-stress instability of the FETs. Devices with larger strains exhibit lower stability than those with smaller strains because of the increased water content, which is accompanied by the formation of cracks and nanoscale cavities in the semiconducting polymer film as results of the applied strain. The strain-dependence of bias-stress stability of stretchable OFETs can be eliminated by passivating the devices to avoid penetration of water molecules. This work provides new insights for the development of bias-stable stretchable OFETs. |
| format | Article |
| id | doaj-art-4c8edf046def4740af459b699ff0a063 |
| institution | OA Journals |
| issn | 2397-4621 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Flexible Electronics |
| spelling | doaj-art-4c8edf046def4740af459b699ff0a0632025-08-20T02:12:03ZengNature Portfolionpj Flexible Electronics2397-46212024-10-018111210.1038/s41528-024-00359-3Strain-dependent charge trapping and its impact on the operational stability of polymer field-effect transistorsSangsik Park0Seung Hyun Kim1Hansol Lee2Kilwon Cho3Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH)Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH)Department of Chemical and Biological Engineering, Gachon UniversityDepartment of Chemical Engineering, Pohang University of Science and Technology (POSTECH)Abstract Despite recent dramatic improvements in the electronic characteristics of stretchable organic field-effect transistors (FETs), their low operational stability remains a bottleneck for their use in practical applications. Here, the operational stability, especially the bias-stress stability, of semiconducting polymer-based FETs under various tensile strains is investigated. Analyses on the structure of stretched semiconducting polymer films and spectroscopic quantification of trapped charges within them reveal the major cause of the strain-dependent bias-stress instability of the FETs. Devices with larger strains exhibit lower stability than those with smaller strains because of the increased water content, which is accompanied by the formation of cracks and nanoscale cavities in the semiconducting polymer film as results of the applied strain. The strain-dependence of bias-stress stability of stretchable OFETs can be eliminated by passivating the devices to avoid penetration of water molecules. This work provides new insights for the development of bias-stable stretchable OFETs.https://doi.org/10.1038/s41528-024-00359-3 |
| spellingShingle | Sangsik Park Seung Hyun Kim Hansol Lee Kilwon Cho Strain-dependent charge trapping and its impact on the operational stability of polymer field-effect transistors npj Flexible Electronics |
| title | Strain-dependent charge trapping and its impact on the operational stability of polymer field-effect transistors |
| title_full | Strain-dependent charge trapping and its impact on the operational stability of polymer field-effect transistors |
| title_fullStr | Strain-dependent charge trapping and its impact on the operational stability of polymer field-effect transistors |
| title_full_unstemmed | Strain-dependent charge trapping and its impact on the operational stability of polymer field-effect transistors |
| title_short | Strain-dependent charge trapping and its impact on the operational stability of polymer field-effect transistors |
| title_sort | strain dependent charge trapping and its impact on the operational stability of polymer field effect transistors |
| url | https://doi.org/10.1038/s41528-024-00359-3 |
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