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Analysis of The Cross Section of Inkjet-Printed Conductive Tracks on PET Films

Authors:
Martin Ungerer
Waldemar Spomer
Lisa Veith
Annika Fries
Christian Debatin
Irene Wacker
Rasmus Schröder
Ulrich Gengenbach

Keywords: Inkjet-printing; silver nanoparticle ink; polyethylene terephthalate; sintering; ultramicrotomy; imaging by scanning electron microscopy; cross section; microstructure; nanoparticle density

Abstract:
The development of internet of things devices, smart sensor systems or wearables necessitates new fabrication technologies. The challenge is to fulfil requirements such as flexibility, low-weight and low-cost. Inkjet printing of conductive microstructures on polymer films has become increasingly important for these applications in the last decade. This additive fabrication approach is potentially more ecofriendly than conventional processes but has still not reached wider implementation in industry. One of the potential reasons is the still insufficient reliability of printed components that must sustain electrical, thermal, mechanical and chemical stress. In order to optimize the fabrication process with regard to these requirements, the nano- and microstructure of printed patterns needs to be analyzed. In the present work, a method is outlined for the nano- and microstructure analysis of inkjet-printed conductive tracks on polymer substrates by means of scanning electron microscopy of cross sections prepared by ultramicrotomy.

Pages: 162 to 168

Copyright: Copyright (c) IARIA, 2017

Publication date: March 19, 2017

Published in: conference

ISSN: 2308-4138

ISBN: 978-1-61208-538-8

Location: Nice, France

Dates: from March 19, 2017 to March 23, 2017