Soft fabric-based flexible organic light-emitting diodes

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We reported the first organic light-emitting diodes (OLEDs) on actual soft fabrics that can be used for a wearable display. Polyurethane (PU) and poly(vinyl alcohol) (PVA) layers, which only degrade slightly the flex stiffness of bare fabrics due to their ductile characteristics, were used as planarization layers via a simple fabrication process involving lamination and spin-coating. Therefore, many of the mechanical characteristics of the bare fabric substrates were retained in the planarized fabric substrates. Non-inverted top-emitting OLEDs, designed by considering the optical microcavity effects, were fabricated on a planarized surface by thermal evaporation. The fabricated OLEDs on soft fabrics showed a high current efficiency of around 8 cd/A, reliability during a 1000 cycle bending test with a bending radius of 5 mm, and clear green emission up to an emission angle of 70. Consequently, we developed high-performance OLEDs on very similar to real fabric via a simple universalized fabrication method. © 2013 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2013-11
Language
English
Article Type
Article
Keywords

MICROCAVITY STRUCTURE; ELECTRONIC FIBERS; METAL MIRRORS; TEXTILES; DEVICES; LIGHTWEIGHT; FILM

Citation

ORGANIC ELECTRONICS, v.14, no.11, pp.3007 - 3013

ISSN
1566-1199
DOI
10.1016/j.orgel.2013.09.001
URI
http://hdl.handle.net/10203/201505
Appears in Collection
EE-Journal Papers(저널논문)
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