Layer-by-layer assembly yields thin graphene films with near theoretical conductivity
Abstract Thin films fabricated from solution-processed graphene nanosheets are of considerable technological interest for a wide variety of applications, such as transparent conductors, supercapacitors, and memristors. However, very thin printed films tend to have low conductivity compared to thicke...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | npj 2D Materials and Applications |
| Online Access: | https://doi.org/10.1038/s41699-025-00525-9 |
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| author | Oran Cassidy Kevin Synnatschke Jose M. Munuera Cian Gabbett Tian Carey Luke Doolan Eoin Caffrey Jonathan N. Coleman |
| author_facet | Oran Cassidy Kevin Synnatschke Jose M. Munuera Cian Gabbett Tian Carey Luke Doolan Eoin Caffrey Jonathan N. Coleman |
| author_sort | Oran Cassidy |
| collection | DOAJ |
| description | Abstract Thin films fabricated from solution-processed graphene nanosheets are of considerable technological interest for a wide variety of applications, such as transparent conductors, supercapacitors, and memristors. However, very thin printed films tend to have low conductivity compared to thicker ones. In this work, we demonstrate a simple layer-by-layer deposition method which yields thin films of highly-aligned, electrochemically-exfoliated graphene which have low roughness and nanometer-scale thickness control. By optimising the deposition parameters, we demonstrate films with high conductivity (1.3 × 105 S/m) at very low thickness (11 nm). Finally, we connect our high conductivities to low inter-nanosheet junction resistances (RJ), which we estimate at RJ ~ 1kΩ. |
| format | Article |
| id | doaj-art-b92a642e04bc4eb38e8247243fd9aa1d |
| institution | Kabale University |
| issn | 2397-7132 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj 2D Materials and Applications |
| spelling | doaj-art-b92a642e04bc4eb38e8247243fd9aa1d2025-01-12T12:26:05ZengNature Portfolionpj 2D Materials and Applications2397-71322025-01-019111110.1038/s41699-025-00525-9Layer-by-layer assembly yields thin graphene films with near theoretical conductivityOran Cassidy0Kevin Synnatschke1Jose M. Munuera2Cian Gabbett3Tian Carey4Luke Doolan5Eoin Caffrey6Jonathan N. Coleman7School of Physics, CRANN & AMBER Research Centres, Trinity College DublinSchool of Physics, CRANN & AMBER Research Centres, Trinity College DublinSchool of Physics, CRANN & AMBER Research Centres, Trinity College DublinSchool of Physics, CRANN & AMBER Research Centres, Trinity College DublinSchool of Physics, CRANN & AMBER Research Centres, Trinity College DublinSchool of Physics, CRANN & AMBER Research Centres, Trinity College DublinSchool of Physics, CRANN & AMBER Research Centres, Trinity College DublinSchool of Physics, CRANN & AMBER Research Centres, Trinity College DublinAbstract Thin films fabricated from solution-processed graphene nanosheets are of considerable technological interest for a wide variety of applications, such as transparent conductors, supercapacitors, and memristors. However, very thin printed films tend to have low conductivity compared to thicker ones. In this work, we demonstrate a simple layer-by-layer deposition method which yields thin films of highly-aligned, electrochemically-exfoliated graphene which have low roughness and nanometer-scale thickness control. By optimising the deposition parameters, we demonstrate films with high conductivity (1.3 × 105 S/m) at very low thickness (11 nm). Finally, we connect our high conductivities to low inter-nanosheet junction resistances (RJ), which we estimate at RJ ~ 1kΩ.https://doi.org/10.1038/s41699-025-00525-9 |
| spellingShingle | Oran Cassidy Kevin Synnatschke Jose M. Munuera Cian Gabbett Tian Carey Luke Doolan Eoin Caffrey Jonathan N. Coleman Layer-by-layer assembly yields thin graphene films with near theoretical conductivity npj 2D Materials and Applications |
| title | Layer-by-layer assembly yields thin graphene films with near theoretical conductivity |
| title_full | Layer-by-layer assembly yields thin graphene films with near theoretical conductivity |
| title_fullStr | Layer-by-layer assembly yields thin graphene films with near theoretical conductivity |
| title_full_unstemmed | Layer-by-layer assembly yields thin graphene films with near theoretical conductivity |
| title_short | Layer-by-layer assembly yields thin graphene films with near theoretical conductivity |
| title_sort | layer by layer assembly yields thin graphene films with near theoretical conductivity |
| url | https://doi.org/10.1038/s41699-025-00525-9 |
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