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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Edge-driven nanomembrane-based vertical organic transistors showing a multi-sensing capability

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Nawaz, Ali [1] ; Merces, Leandro [1] ; de Andrade, Denise M. [1, 2] ; de Camargo, Davi H. S. [1, 3] ; Bof Bufon, Carlos C. [1, 3]
Total Authors: 5
[1] Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Nanotechnol Natl Lab LNNano, BR-13083970 Campinas, SP - Brazil
[2] Ponta Grossa State Univ UEPG, Dept Mat Engn, BR-84030900 Ponta Grossa, Parana - Brazil
[3] Sao Paulo State Univ UNESP, Postgrad Program Mat Sci & Technol POSMAT, BR-17033360 Bauru, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: NATURE COMMUNICATIONS; v. 11, n. 1 FEB 12 2020.
Web of Science Citations: 14

The effective utilization of vertical organic transistors in high current density applications demands further reduction of channel length (given by the thickness of the organic semiconducting layer and typically reported in the 100 nm range) along with the optimization of the source electrode structure. Here we present a viable solution by applying rolled-up metallic nanomembranes as the drain-electrode (which enables the incorporation of few nanometer-thick semiconductor layers) and by lithographically patterning the source-electrode. Our vertical organic transistors operate at ultra-low voltages and demonstrate high current densities (similar to 0.5 A cm(-2)) that are found to depend directly on the number of source edges, provided the source perforation gap is wider than 250 nm. We anticipate that further optimization of device structure can yield higher current densities (similar to 10 A cm(-2)). The use of rolled-up drain-electrode also enables sensing of humidity and light which highlights the potential of these devices to advance next-generation sensing technologies. (AU)

FAPESP's process: 18/18136-0 - Hybrid nanodevices: magnetoelectronic transport and development of sensors based on molecules/nanomembranes
Grantee:Leandro das Mercês Silva
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 14/50906-9 - INCT 2014: in Functional Complex Materials
Grantee:Fernando Galembeck
Support type: Research Projects - Thematic Grants
FAPESP's process: 16/25346-5 - Capacitive devices for hybrid nanostructures characterization: study of electrical properties of surface metal-organic frameworks -SURMOFs- and metallophthalocyanines
Grantee:Tatiana Parra Vello
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 14/25979-2 - Fabrication and characterization of devices and systems based on hybrid nanomembranes
Grantee:Carlos Cesar Bof Bufon
Support type: Research Grants - Young Investigators Grants