Impacts of capacitive current on electrolyte-gated graphene field-effect transistor arrays
We investigate the effect of gate-source current ( I _GS ) on variations in the Dirac point voltage ( V _DP ) in electrolyte-gated graphene field-effect transistor (EG-GFET) arrays through a time-resolved analysis of I _GS and an equivalent circuit model. Source/drain electrodes exposed to the elect...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | Applied Physics Express |
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| Online Access: | https://doi.org/10.35848/1882-0786/adb125 |
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| author | Shota Ushiba Tomomi Nakano Yuka Tokuda Shinsuke Tani Masahiko Kimura Kazuhiko Matsumoto |
| author_facet | Shota Ushiba Tomomi Nakano Yuka Tokuda Shinsuke Tani Masahiko Kimura Kazuhiko Matsumoto |
| author_sort | Shota Ushiba |
| collection | DOAJ |
| description | We investigate the effect of gate-source current ( I _GS ) on variations in the Dirac point voltage ( V _DP ) in electrolyte-gated graphene field-effect transistor (EG-GFET) arrays through a time-resolved analysis of I _GS and an equivalent circuit model. Source/drain electrodes exposed to the electrolyte induce a substantial capacitive current and a prolonged charging duration of the electric double-layer capacitance, which leads to a position-dependent V _DP variation relative to the gate electrode. The electrode-passivation alleviates the variation by significantly reducing I _GS and associated charging time. These findings offer critical insights for the design of integrated EG-GFET arrays. |
| format | Article |
| id | doaj-art-7eadd38b463f4983b8bc6ee1d459fb0b |
| institution | OA Journals |
| issn | 1882-0786 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Applied Physics Express |
| spelling | doaj-art-7eadd38b463f4983b8bc6ee1d459fb0b2025-08-20T02:13:44ZengIOP PublishingApplied Physics Express1882-07862025-01-0118202500310.35848/1882-0786/adb125Impacts of capacitive current on electrolyte-gated graphene field-effect transistor arraysShota Ushiba0https://orcid.org/0000-0001-7652-081XTomomi Nakano1Yuka Tokuda2Shinsuke Tani3Masahiko Kimura4Kazuhiko Matsumoto5Murata Manufacturing Co., Ltd., 1-10-1 Higashikotari, Nagaokakyo-shi, Kyoto 617-8555, JapanMurata Manufacturing Co., Ltd., 1-10-1 Higashikotari, Nagaokakyo-shi, Kyoto 617-8555, JapanMurata Manufacturing Co., Ltd., 1-10-1 Higashikotari, Nagaokakyo-shi, Kyoto 617-8555, JapanMurata Manufacturing Co., Ltd., 1-10-1 Higashikotari, Nagaokakyo-shi, Kyoto 617-8555, JapanMurata Manufacturing Co., Ltd., 1-10-1 Higashikotari, Nagaokakyo-shi, Kyoto 617-8555, JapanSANKEN, Osaka University , Ibaraki, Osaka 567-0047, JapanWe investigate the effect of gate-source current ( I _GS ) on variations in the Dirac point voltage ( V _DP ) in electrolyte-gated graphene field-effect transistor (EG-GFET) arrays through a time-resolved analysis of I _GS and an equivalent circuit model. Source/drain electrodes exposed to the electrolyte induce a substantial capacitive current and a prolonged charging duration of the electric double-layer capacitance, which leads to a position-dependent V _DP variation relative to the gate electrode. The electrode-passivation alleviates the variation by significantly reducing I _GS and associated charging time. These findings offer critical insights for the design of integrated EG-GFET arrays.https://doi.org/10.35848/1882-0786/adb125graphenefield-effect transistorselectrolyteelectric double-layercapacitive currentfaradic current |
| spellingShingle | Shota Ushiba Tomomi Nakano Yuka Tokuda Shinsuke Tani Masahiko Kimura Kazuhiko Matsumoto Impacts of capacitive current on electrolyte-gated graphene field-effect transistor arrays Applied Physics Express graphene field-effect transistors electrolyte electric double-layer capacitive current faradic current |
| title | Impacts of capacitive current on electrolyte-gated graphene field-effect transistor arrays |
| title_full | Impacts of capacitive current on electrolyte-gated graphene field-effect transistor arrays |
| title_fullStr | Impacts of capacitive current on electrolyte-gated graphene field-effect transistor arrays |
| title_full_unstemmed | Impacts of capacitive current on electrolyte-gated graphene field-effect transistor arrays |
| title_short | Impacts of capacitive current on electrolyte-gated graphene field-effect transistor arrays |
| title_sort | impacts of capacitive current on electrolyte gated graphene field effect transistor arrays |
| topic | graphene field-effect transistors electrolyte electric double-layer capacitive current faradic current |
| url | https://doi.org/10.35848/1882-0786/adb125 |
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