Electrostatically-sprayed carbon electrodes for high performance organic complementary circuits
Abstract Organic thin-film transistors (OTFTs) are promising building blocks of flexible printable electronic devices. Similar to inorganic FETs, OTFTs are heterostructures consisting of metals, insulators, and semiconductors, in which nanoscale interfaces between different components should be prec...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-10-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-19387-y |
| _version_ | 1811195051041095680 |
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| author | Kazuyoshi Watanabe Naoki Miura Hiroaki Taguchi Takeshi Komatsu Hideyuki Nosaka Toshihiro Okamoto Shun Watanabe Jun Takeya |
| author_facet | Kazuyoshi Watanabe Naoki Miura Hiroaki Taguchi Takeshi Komatsu Hideyuki Nosaka Toshihiro Okamoto Shun Watanabe Jun Takeya |
| author_sort | Kazuyoshi Watanabe |
| collection | DOAJ |
| description | Abstract Organic thin-film transistors (OTFTs) are promising building blocks of flexible printable electronic devices. Similar to inorganic FETs, OTFTs are heterostructures consisting of metals, insulators, and semiconductors, in which nanoscale interfaces between different components should be precisely engineered. However, OTFTs use noble metals, such as gold, as electrodes, which has been a bottleneck in terms of cost reduction and low environmental loading. In this study, we demonstrate that graphite-based carbon electrodes can be deposited and patterned directly onto an organic single-crystalline thin film via electrostatic spray coating. The present OTFTs exhibited reasonably high field-effect mobilities of up to 11 cm2 V−1 s−1 for p-type and 1.4 cm2 V−1 s−1 for n-type with no significant deterioration during electrostatic spray processes. We also demonstrate two significant milestones from the viewpoint of material science: a complementary circuit, an inverter consisting of p- and n-type OTFTs, and an operatable metal-free OTFT composed of fully carbon-based materials. These results constitute a key step forward in the further development of printed metal-free integrated circuits. |
| first_indexed | 2024-04-12T00:37:17Z |
| format | Article |
| id | doaj.art-4aba68927f804274981bfcb26285aa8a |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-12T00:37:17Z |
| publishDate | 2022-10-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-4aba68927f804274981bfcb26285aa8a2022-12-22T03:55:08ZengNature PortfolioScientific Reports2045-23222022-10-011211810.1038/s41598-022-19387-yElectrostatically-sprayed carbon electrodes for high performance organic complementary circuitsKazuyoshi Watanabe0Naoki Miura1Hiroaki Taguchi2Takeshi Komatsu3Hideyuki Nosaka4Toshihiro Okamoto5Shun Watanabe6Jun Takeya7Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of TokyoNTT Device Technology Laboratories, Nippon Telegraph and Telephone (NTT) CorporationNTT Device Technology Laboratories, Nippon Telegraph and Telephone (NTT) CorporationNTT Device Technology Laboratories, Nippon Telegraph and Telephone (NTT) CorporationNTT Device Technology Laboratories, Nippon Telegraph and Telephone (NTT) CorporationDepartment of Advanced Materials Science, Graduate School of Frontier Sciences, The University of TokyoDepartment of Advanced Materials Science, Graduate School of Frontier Sciences, The University of TokyoDepartment of Advanced Materials Science, Graduate School of Frontier Sciences, The University of TokyoAbstract Organic thin-film transistors (OTFTs) are promising building blocks of flexible printable electronic devices. Similar to inorganic FETs, OTFTs are heterostructures consisting of metals, insulators, and semiconductors, in which nanoscale interfaces between different components should be precisely engineered. However, OTFTs use noble metals, such as gold, as electrodes, which has been a bottleneck in terms of cost reduction and low environmental loading. In this study, we demonstrate that graphite-based carbon electrodes can be deposited and patterned directly onto an organic single-crystalline thin film via electrostatic spray coating. The present OTFTs exhibited reasonably high field-effect mobilities of up to 11 cm2 V−1 s−1 for p-type and 1.4 cm2 V−1 s−1 for n-type with no significant deterioration during electrostatic spray processes. We also demonstrate two significant milestones from the viewpoint of material science: a complementary circuit, an inverter consisting of p- and n-type OTFTs, and an operatable metal-free OTFT composed of fully carbon-based materials. These results constitute a key step forward in the further development of printed metal-free integrated circuits.https://doi.org/10.1038/s41598-022-19387-y |
| spellingShingle | Kazuyoshi Watanabe Naoki Miura Hiroaki Taguchi Takeshi Komatsu Hideyuki Nosaka Toshihiro Okamoto Shun Watanabe Jun Takeya Electrostatically-sprayed carbon electrodes for high performance organic complementary circuits Scientific Reports |
| title | Electrostatically-sprayed carbon electrodes for high performance organic complementary circuits |
| title_full | Electrostatically-sprayed carbon electrodes for high performance organic complementary circuits |
| title_fullStr | Electrostatically-sprayed carbon electrodes for high performance organic complementary circuits |
| title_full_unstemmed | Electrostatically-sprayed carbon electrodes for high performance organic complementary circuits |
| title_short | Electrostatically-sprayed carbon electrodes for high performance organic complementary circuits |
| title_sort | electrostatically sprayed carbon electrodes for high performance organic complementary circuits |
| url | https://doi.org/10.1038/s41598-022-19387-y |
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