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Fully Printed Inverters using Metal‐Oxide Semiconductor and Graphene Passives on Flexible Substrates

  • Printed and flexible metal‐oxide transistor technology has recently demonstrated great promise due to its high performance and robust mechanical stability. Herein, fully printed inverter structures using electrolyte‐gated oxide transistors on a flexible polyimide (PI) substrate are discussed in detail. Conductive graphene ink is printed as the passive structures and interconnects. The additivePrinted and flexible metal‐oxide transistor technology has recently demonstrated great promise due to its high performance and robust mechanical stability. Herein, fully printed inverter structures using electrolyte‐gated oxide transistors on a flexible polyimide (PI) substrate are discussed in detail. Conductive graphene ink is printed as the passive structures and interconnects. The additive printed transistors on PI substrates show an on/off ratio of 106 and show mobilities similar to the state‐of‐the‐art printed transistors on rigid substrates. Printed meander structures of graphene are used as pull‐up resistances in a transistor–resistor logic to create fully printed inverters. The printed and flexible inverters show a signal gain of 3.5 and a propagation delay of 30 ms. These printed inverters are able to withstand a tensile strain of 1.5% following more than 200 cycles of mechanical bending. The stability of the electrical direct current (DC) properties has been observed over a period of 5 weeks. These oxide transistor‐based fully printed inverters are relevant for digital printing methods which could be implemented into roll‐to‐roll processes.show moreshow less

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Metadaten
Author:Surya Abhishek Singaraju, Gabriel Cadilha Marques, Patric Gruber, Robert Kruk, Horst Hahn, Ben Breitung, Jasmin Aghassi-HagmannORCiDGND
Publisher:Wiley-VCH Verlag GmbH & Co. KGaA
Year of Publication:2020
Page Number:6
Language:English
Parent Title (English):Physica status solidi. Rapid research letters
Volume:14
Issue:9
ISSN:1862-6254
First Page:2070036
Document Type:Article (reviewed)
Open Access:Frei zugänglich
Institutes:Bibliografie
Release Date:2020/12/11
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International
DOI:https://doi.org/10.1002/pssr.202000252