Production of Ultra-Thin and High-Quality Nanosheet Networks via Layer-by-Layer Assembly at Liquid-Liquid Interfaces
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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866914984042168320 |
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| author | Neilson, Joseph Caffrey, Eoin Cassidy, Oran Gabbett, Cian Synnatchke, Kevin Schneider, Eileen Munuera, Jose M. Carey, Tian Rimmer, Max Sofer, Zdenek Maultzsch, Janina Haigh, Sarah J. Coleman, Jonathan N. |
| author_facet | Neilson, Joseph Caffrey, Eoin Cassidy, Oran Gabbett, Cian Synnatchke, Kevin Schneider, Eileen Munuera, Jose M. Carey, Tian Rimmer, Max Sofer, Zdenek Maultzsch, Janina Haigh, Sarah J. Coleman, Jonathan N. |
| contents | Solution-processable 2D materials are promising candidates for a range of printed electronics applications. Yet maximising their potential requires solution-phase processing of nanosheets into high-quality networks with carrier mobility (μNet) as close as possible to that of individual nanosheets (μNS). In practise, the presence of inter-nanosheet junctions generally limits electronic conduction, such that the ratio of junction resistance (RJ) to nanosheet resistance (RNS), determines the network mobility via . Hence, achieving RJ/RNS<1 is a crucial step for implementation of 2D materials in printed electronics applications. In this work, we utilise an advanced liquid-interface deposition process to maximise nanosheet alignment and network uniformity, thus reducing RJ. We demonstrate the approach using graphene and MoS2 as model materials, achieving low RJ/RNS values of 0.5 and 0.2, respectively. The resultant graphene networks show a high conductivity of σNet = 5 \times 104 S/m while our semiconducting MoS2 networks demonstrate record mobility of μNet = 30 cm2/Vs, both at extremely low network thickness (tNet <10 nm). Finally, we show that the deposition process is compatible with non-layered quasi-2D materials such as silver nanosheets (AgNS), achieving network conductivity close to bulk silver for networks <100 nm thick. We believe this work is the first to report nanosheet networks with RJ/RNS<1 and serves to guide future work in 2D materials-based printed electronics. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2410_16952 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Production of Ultra-Thin and High-Quality Nanosheet Networks via Layer-by-Layer Assembly at Liquid-Liquid Interfaces Neilson, Joseph Caffrey, Eoin Cassidy, Oran Gabbett, Cian Synnatchke, Kevin Schneider, Eileen Munuera, Jose M. Carey, Tian Rimmer, Max Sofer, Zdenek Maultzsch, Janina Haigh, Sarah J. Coleman, Jonathan N. Mesoscale and Nanoscale Physics Solution-processable 2D materials are promising candidates for a range of printed electronics applications. Yet maximising their potential requires solution-phase processing of nanosheets into high-quality networks with carrier mobility (μNet) as close as possible to that of individual nanosheets (μNS). In practise, the presence of inter-nanosheet junctions generally limits electronic conduction, such that the ratio of junction resistance (RJ) to nanosheet resistance (RNS), determines the network mobility via . Hence, achieving RJ/RNS<1 is a crucial step for implementation of 2D materials in printed electronics applications. In this work, we utilise an advanced liquid-interface deposition process to maximise nanosheet alignment and network uniformity, thus reducing RJ. We demonstrate the approach using graphene and MoS2 as model materials, achieving low RJ/RNS values of 0.5 and 0.2, respectively. The resultant graphene networks show a high conductivity of σNet = 5 \times 104 S/m while our semiconducting MoS2 networks demonstrate record mobility of μNet = 30 cm2/Vs, both at extremely low network thickness (tNet <10 nm). Finally, we show that the deposition process is compatible with non-layered quasi-2D materials such as silver nanosheets (AgNS), achieving network conductivity close to bulk silver for networks <100 nm thick. We believe this work is the first to report nanosheet networks with RJ/RNS<1 and serves to guide future work in 2D materials-based printed electronics. |
| title | Production of Ultra-Thin and High-Quality Nanosheet Networks via Layer-by-Layer Assembly at Liquid-Liquid Interfaces |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2410.16952 |