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Fully Printed Light‐Emitting Electrochemical Cells Utilizing Biocompatible Materials
Author(s) -
Zimmermann Johannes,
Porcarelli Luca,
Rödlmeier Tobias,
SanchezSanchez Ana,
Mecerreyes David,
HernandezSosa Gerardo
Publication year - 2018
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201705795
Subject(s) - materials science , biocompatible material , fabrication , nanotechnology , electronics , substrate (aquarium) , conformable matrix , electroluminescence , organic electronics , biomaterial , printed electronics , biodegradable polymer , polymer , biomedical engineering , composite material , inkwell , electrical engineering , medicine , oceanography , alternative medicine , pathology , layer (electronics) , transistor , voltage , geology , engineering
The use of biomaterials and bioinspired concepts in electronics will enable the fabrication of transient and disposable technologies within areas ranging from smart packaging and advertisement to healthcare applications. In this work, the use of a nonhalogenated biodegradable solid polymer electrolyte based on poly(ε‐caprolactone‐ co ‐trimethylene carbonate) and tetrabutylammonium bis‐oxalato borate in light‐emitting electrochemical cells (LECs) is presented. It is shown that the spin‐cast devices exhibit current efficiencies of ≈2 cd A −1 with luminance over ≈12 000 cd m −2 , an order of magnitude higher than previous bio‐based LECs. By a combination of industrially relevant techniques (i.e., inkjet printing and blade coating), the fabrication of LEC devices on a cellulose‐based flexible biodegradable substrate showing lifetimes compatible with transient applications is demonstrated. The presented results have direct implications toward the industrial manufacturing of biomaterial‐based light‐emitting devices with potential use in future biodegradable/biocompatible electronics.