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Open AccessArticle

Printing Smart Designs of Light Emitting Devices with Maintained Textile Properties

1
Institute for Materials Research (IMO-IMOMEC)—Engineering Materials and Applications, Hasselt University, Wetenschapspark 1, 3590 Diepenbeek, Belgium
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Interuniversity MicroElectronics Center (IMEC), IMOMEC, Universitaire Campus—Wetenschapspark 1, 3590 Diepenbeek, Belgium
3
Institute of Textile Technology of RWTH Aachen, Otto Blumenthal Strasse 1, 52074 Aachen, Germany
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Institute for Design Technology, Riga Technical University, Kalku Street 1, LV-1658 Riga, Latvia
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Flanders Make vzw, Oude Diestersebaan 133, B-3920 Lommel, Belgium
*
Author to whom correspondence should be addressed.
This paper was selected as best paper of the ITMC2017 conference session ‘Smart Textiles: Production and Design’.
Materials 2018, 11(2), 290; https://doi.org/10.3390/ma11020290
Received: 18 January 2018 / Revised: 2 February 2018 / Accepted: 9 February 2018 / Published: 13 February 2018
(This article belongs to the Special Issue Stretchable and Flexible Electronic Materials & Devices)
To maintain typical textile properties, smart designs of light emitting devices are printed directly onto textile substrates. A first approach shows improved designs for alternating current powder electroluminescence (ACPEL) devices. A configuration with the following build-up, starting from the textile substrate, was applied using the screen printing technique: silver (10 µm)/barium titanate (10 µm)/zinc-oxide (10 µm) and poly(3,4-ethylenedioxythiophene)poly(styrenesulfonate) (10 µm). Textile properties such as flexibility, drapability and air permeability are preserved by implementing a pixel-like design of the printed layers. Another route is the application of organic light emitting devices (OLEDs) fabricated out of following layers, also starting from the textile substrate: polyurethane or acrylate (10–20 µm) as smoothing layer/silver (200 nm)/poly(3,4-ethylenedioxythiophene)poly(styrenesulfonate) (35 nm)/super yellow (80 nm)/calcium/aluminum (12/17 nm). Their very thin nm-range layer thickness, preserving the flexibility and drapability of the substrate, and their low working voltage, makes these devices the possible future in light-emitting wearables. View Full-Text
Keywords: electroluminescence; OLED; printing; textiles electroluminescence; OLED; printing; textiles
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MDPI and ACS Style

Verboven, I.; Stryckers, J.; Mecnika, V.; Vandevenne, G.; Jose, M.; Deferme, W. Printing Smart Designs of Light Emitting Devices with Maintained Textile Properties. Materials 2018, 11, 290.

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