A light–emission textile device: conformal spray-sintering of a woven fabric electrode
2016 (English)In: Flexible and Printed Electronics, ISSN 2058-8585, Vol. 1, no 2, 025004Article in journal (Refereed) Published
We report on the realization of an ultra-flexible, light-weight and large-area emissive textile device. The anode and active material of a light-emitting electrochemical cell (LEC) were deposited by conformal spray-coating of a transparent fabric-based electrode, comprising a weave of fine Ag-coated Cu wires and poly(ethylene naphthalene) monofilament fibers embedded in a polyurethane matrix. The yellow-emitting textile featured low turn-on voltage (5 V), high maximum brightness (>4000 cd m−2), good efficiency (3.4 cd A−1), and reasonable lifetime (180 h at >100 cd m−2). Uniform emission to the eye was attained from thin and highly flexible textiles featuring a large emission area of 42 cm2, without resorting to planarization of the partially wavy-shaped (valley-to-peak height = 2.7 μm) fabric electrode. The key enabling factors for the functional emissive textile are the characteristic in situ electrochemical doping of LEC devices, the 'dry' spray-sintering deposition of the active material, and the attractive mechanical, electronic and optical properties of the fabric-based electrode.
Place, publisher, year, edition, pages
Institute of Physics (IOP), 2016. Vol. 1, no 2, 025004
Textile, Rubber and Polymeric Materials Other Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:umu:diva-124284DOI: 10.1088/2058-8585/1/2/025004OAI: oai:DiVA.org:umu-124284DiVA: diva2:950629