Optimized Synthesis and Device Integration of Long 17-Atom-Wide Armchair Graphene Nanoribbons
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| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| author | Hwang, Jeong Ha Bassi, Nicolò Fadel, Mayada Braun, Oliver Dumslaff, Tim Pignedoli, Carlo Stiefel, Michael Furrer, Roman Hayashi, Hironobu Yamada, Hiroko Narita, Akimitsu Müllen, Klaus Calame, Michel Perrin, Mickael L. Fasel, Roman Ruffieux, Pascal Meunier, Vincent Barin, Gabriela Borin |
| author_facet | Hwang, Jeong Ha Bassi, Nicolò Fadel, Mayada Braun, Oliver Dumslaff, Tim Pignedoli, Carlo Stiefel, Michael Furrer, Roman Hayashi, Hironobu Yamada, Hiroko Narita, Akimitsu Müllen, Klaus Calame, Michel Perrin, Mickael L. Fasel, Roman Ruffieux, Pascal Meunier, Vincent Barin, Gabriela Borin |
| contents | Seventeen-carbon-atom-wide armchair graphene nanoribbons (17-AGNRs) are promising candidates for high-performance electronic devices due to their narrow electronic bandgap. Atomic precision in edge structure and width control is achieved through a bottom-up on-surface synthesis (OSS) approach from tailored molecular precursors in ultra-high vacuum (UHV). This synthetic protocol must be optimized to meet the structural requirements for device integration, with ribbon length being the most critical parameter. Here, we report optimized OSS conditions that produce 17-AGNRs with an average length of approximately 17 nm. This length enhancement is achieved through a gradual temperature ramping during an extended annealing period, combined with a template-like effect driven by monomer assembly at high surface coverage. The resulting 17-AGNRs are comprehensively characterized in UHV using scanning probe techniques and Raman spectroscopy. Raman measurements following substrate transfer enabled the characterization of the length distribution of GNRs on the device substrate and confirmed their stability under ambient conditions and harsh chemical environments, including acid vapors and etchants. The increased length and ambient stability of the 17-AGNRs lead to their reliable integration into device architectures. As a proof of concept, we integrate 17-AGNRs into field-effect transistors (FET) with graphene electrodes and confirm that electronic transport occurs through the GNRs. This work demonstrates the feasibility of integrating narrow-bandgap GNRs into functional devices and contributes to advancing the development of carbon-based nanoelectronics. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2507_11307 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Optimized Synthesis and Device Integration of Long 17-Atom-Wide Armchair Graphene Nanoribbons Hwang, Jeong Ha Bassi, Nicolò Fadel, Mayada Braun, Oliver Dumslaff, Tim Pignedoli, Carlo Stiefel, Michael Furrer, Roman Hayashi, Hironobu Yamada, Hiroko Narita, Akimitsu Müllen, Klaus Calame, Michel Perrin, Mickael L. Fasel, Roman Ruffieux, Pascal Meunier, Vincent Barin, Gabriela Borin Mesoscale and Nanoscale Physics Materials Science Seventeen-carbon-atom-wide armchair graphene nanoribbons (17-AGNRs) are promising candidates for high-performance electronic devices due to their narrow electronic bandgap. Atomic precision in edge structure and width control is achieved through a bottom-up on-surface synthesis (OSS) approach from tailored molecular precursors in ultra-high vacuum (UHV). This synthetic protocol must be optimized to meet the structural requirements for device integration, with ribbon length being the most critical parameter. Here, we report optimized OSS conditions that produce 17-AGNRs with an average length of approximately 17 nm. This length enhancement is achieved through a gradual temperature ramping during an extended annealing period, combined with a template-like effect driven by monomer assembly at high surface coverage. The resulting 17-AGNRs are comprehensively characterized in UHV using scanning probe techniques and Raman spectroscopy. Raman measurements following substrate transfer enabled the characterization of the length distribution of GNRs on the device substrate and confirmed their stability under ambient conditions and harsh chemical environments, including acid vapors and etchants. The increased length and ambient stability of the 17-AGNRs lead to their reliable integration into device architectures. As a proof of concept, we integrate 17-AGNRs into field-effect transistors (FET) with graphene electrodes and confirm that electronic transport occurs through the GNRs. This work demonstrates the feasibility of integrating narrow-bandgap GNRs into functional devices and contributes to advancing the development of carbon-based nanoelectronics. |
| title | Optimized Synthesis and Device Integration of Long 17-Atom-Wide Armchair Graphene Nanoribbons |
| topic | Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2507.11307 |