All-Printed Flexible Organic Transistors Enabled by Surface Tension-Guided Blade Coating

A combination of surface energy‐guided blade coating and inkjet printing is used to fabricate an all‐printed high performance, high yield, and low variability organic thin film transistor (OTFT) array on a plastic substrate. Functional inks and printing processes were optimized to yield self‐assembl...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2014-08, Vol.26 (32), p.5722-5727
Main Authors: Pierre, Adrien, Sadeghi, Mahsa, Payne, Marcia M., Facchetti, Antonio, Anthony, John E., Arias, Ana Claudia
Format: Article
Language:English
Subjects:
Additives
Arrays
Blade coating
Concentration (composition)
Devices
flexible electronics
organic semiconductor blends
organic thin film transistors
Printed organic electronics
Semiconductor devices
Semiconductors
solution processed thin films
Solvents
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Summary:A combination of surface energy‐guided blade coating and inkjet printing is used to fabricate an all‐printed high performance, high yield, and low variability organic thin film transistor (OTFT) array on a plastic substrate. Functional inks and printing processes were optimized to yield self‐assembled homogenous thin films in every layer of the OTFT stack. Specifically, we investigated the effect of capillary number, semiconductor ink composition (small molecule‐polymer ratio), and additive high boiling point solvent concentrations on film fidelity, pattern design, device performance and yields.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201401520