Braun, Oliver; Overbeck, Jan; El Abbassi, Maria; Käser, Silvan; Furrer, Roman; Olziersky, Antonis; Flasby, Alexander; Borin Barin, Gabriela; Sun, Qiang; Darawish, Rimah; Müllen, Klaus; Ruffieux, Pascal; Fasel, Roman; Shorubalko, Ivan; Perrin, Mickael L.; Calame, Michel (2021). Optimized graphene electrodes for contacting graphene nanoribbons. Carbon, 184, pp. 331-339. Elsevier 10.1016/j.carbon.2021.08.001
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21_Braun_Carbon_Optimized_graphene_electrodes_for_contacting_graphene_nanoribbons.pdf - Accepted Version Available under License Creative Commons: Attribution-Noncommercial-No Derivative Works (CC-BY-NC-ND). Download (2MB) | Preview |
Atomically precise graphene nanoribbons (GNRs) are a promising emerging class of designer quantum materials with electronic properties that are tunable by chemical design. However, many challenges remain in the device integration of these materials, especially regarding contacting strategies. We report on the device integration of uniaxially aligned and non-aligned 9-atom wide armchair graphene nanoribbons (9-AGNRs) in a field-effect transistor geometry using electron beam lithography-defined graphene electrodes. This approach yields controlled electrode geometries and enables higher fabrication throughput compared to previous approaches using an electrical breakdown technique. Thermal annealing is found to be a crucial step for successful device operation resulting in electronic transport characteristics showing a strong gate dependence. Raman spectroscopy confirms the integrity of the graphene electrodes after patterning and of the GNRs after device integration. Our results demonstrate the importance of the GNR-graphene electrode interface and pave the way for GNR device integration with structurally well-defined electrodes.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP) |
UniBE Contributor: |
Darawish, Rimah, Fasel, Roman |
Subjects: |
500 Science > 570 Life sciences; biology 500 Science > 540 Chemistry 500 Science > 530 Physics |
ISSN: |
0008-6223 |
Publisher: |
Elsevier |
Language: |
English |
Submitter: |
Roman Fasel |
Date Deposited: |
17 Feb 2022 13:43 |
Last Modified: |
05 Dec 2022 16:05 |
Publisher DOI: |
10.1016/j.carbon.2021.08.001 |
BORIS DOI: |
10.48350/164875 |
URI: |
https://boris.unibe.ch/id/eprint/164875 |
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