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Open AccessArticle

Photo-Induced Doping in a Graphene Field-Effect Transistor with Inkjet-Printed Organic Semiconducting Molecules

1
National Research University of Electronic Technology, 124498 Moscow, Russia
2
Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX 78758, USA
3
BioSense Institute-Research and Development Institute for Information Technologies in Biosystems, University of Novi Sad, 21000 Novi Sad, Serbia
4
P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
*
Author to whom correspondence should be addressed.
Nanomaterials 2019, 9(12), 1753; https://doi.org/10.3390/nano9121753
Received: 15 November 2019 / Revised: 1 December 2019 / Accepted: 4 December 2019 / Published: 10 December 2019
(This article belongs to the Special Issue Graphene-Based Nanostructures and Optoelectronic Applications)
In this work, we report a novel method of maskless doping of a graphene channel in a field-effect transistor configuration by local inkjet printing of organic semiconducting molecules. The graphene-based transistor was fabricated via large-scale technology, allowing for upscaling electronic device fabrication and lowering the device’s cost. The altering of the functionalization of graphene was performed through local inkjet printing of N,N′-Dihexyl-3,4,9,10-perylenedicarboximide (PDI-C6) semiconducting molecules’ ink. We demonstrated the high resolution (about 50 µm) and accurate printing of organic ink on bare chemical vapor deposited (CVD) graphene. PDI-C6 forms nanocrystals onto the graphene’s surface and transfers charges via π–π stacking to graphene. While the doping from organic molecules was compensated by oxygen molecules under normal conditions, we demonstrated the photoinduced current generation at the PDI-C6/graphene junction with ambient light, a 470 nm diode, and 532 nm laser sources. The local (in the scale of 1 µm) photoresponse of 0.5 A/W was demonstrated at a low laser power density. The methods we developed open the way for local functionalization of an on-chip array of graphene by inkjet printing of different semiconducting organic molecules for photonics and electronics. View Full-Text
Keywords: CVD graphene; field-effect transistor; in-plane junction; non-covalent functionalization; semiconducting organic molecules; inkjet printing; photoresponse CVD graphene; field-effect transistor; in-plane junction; non-covalent functionalization; semiconducting organic molecules; inkjet printing; photoresponse
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MDPI and ACS Style

Nekrasov, N.; Kireev, D.; Omerović, N.; Emelianov, A.; Bobrinetskiy, I. Photo-Induced Doping in a Graphene Field-Effect Transistor with Inkjet-Printed Organic Semiconducting Molecules. Nanomaterials 2019, 9, 1753.

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