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All‐Printed Flexible Organic Transistors Enabled by Surface Tension‐Guided Blade Coating
Author(s) -
Pierre Adrien,
Sadeghi Mahsa,
Payne Marcia M.,
Facchetti Antonio,
Anthony John E.,
Arias Ana Claudia
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201401520
Subject(s) - materials science , thin film transistor , inkwell , coating , substrate (aquarium) , printed electronics , yield (engineering) , surface tension , capillary action , transistor , thin film , stack (abstract data type) , roll to roll processing , nanotechnology , optoelectronics , layer (electronics) , composite material , voltage , oceanography , physics , quantum mechanics , geology , computer science , programming language
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.