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Materials 2018, 11(2), 290; https://doi.org/10.3390/ma11020290

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
2
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
4
Institute for Design Technology, Riga Technical University, Kalku Street 1, LV-1658 Riga, Latvia
5
Flanders Make vzw, Oude Diestersebaan 133, B-3920 Lommel, Belgium
This paper was selected as best paper of the ITMC2017 conference session ‘Smart Textiles: Production and Design’.
*
Author to whom correspondence should be addressed.
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)
View Full-Text   |   Download PDF [4578 KB, uploaded 13 February 2018]   |  

Abstract

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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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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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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