| About this Abstract |
| Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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| Symposium
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Materials
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| Presentation Title |
Inkjet Printing Graphene for Devices: From Contacts to Functional Layers |
| Author(s) |
Feiran Wang, Gustavo Trindade, Jonathan Gosling, Graham Rance, Oleg Makarovsky, Nathan Cottam, Zakhar Kudrynsky, Lyudmila Turyanska, Mark Fromhold, Christopher Tuck |
| On-Site Speaker (Planned) |
Feiran Wang |
| Abstract Scope |
Inkjet printing provides a powerful approach of fabricating graphene devices, especially for large area, customised formats and co-deposition ability with low cost and good quality. Using graphene-polymer ink produced by liquid exfoliation of graphite in ethyl cellulose, we demonstrate various functionalities of inkjet printed graphene composite film with satisfied conductivity and precise geometry. Thermal gravimetric analysis and Raman spectroscopy revealed the preferable thermal anneal at 250oC to improve the intralayer ordering of the few-layer graphene structure for a minimum resistivity of 0.003 Ω.cm. A fully inkjet-printed Graphene/hexagonal Boron Nitride transistor was fabricated and attained signature graphene transfer behaviour with different electron and hole mobilities, which is consistent with the theoretical modelling. A prototype of a photodetector has also been fabricated by inkjet printing graphene contacts to an InSe flake, which outperformed traditional metal contacts with a good linear ohmic due to the band alignment. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |