Tensile characteristics of metal nanoparticle films on flexible polymer substrates for printed electronics applications

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Metal nanoparticle solutions are widely used for the fabrication of printed electronic devices. The mechanical properties of the solution-processed metal nanoparticle thin films are very important for the robust and reliable operation of printed electronic devices. In this paper, we report the tensile characteristics of silver nanoparticle (Ag NP) thin films on flexible polymer substrates by observing the microstructures and measuring the electrical resistance under tensile strain. The effects of the annealing temperatures and periods of Ag NP thin films on their failure strains are explained with a microstructural investigation. The maximum failure strain for Ag NP thin film was 6.6% after initial sintering at 150 degrees C for 30 min. Thermal annealing at higher temperatures for longer periods resulted in a reduction of the maximum failure strain, presumably due to higher porosity and larger pore size. We also found that solution-processed Ag NP thin films have lower failure strains than those of electron beam evaporated Ag thin films due to their highly porous film morphologies.
Publisher
IOP PUBLISHING LTD
Issue Date
2013-03
Language
English
Article Type
Article
Citation

NANOTECHNOLOGY, v.24, no.8

ISSN
0957-4484
DOI
10.1088/0957-4484/24/8/085701
URI
http://hdl.handle.net/10203/174161
Appears in Collection
ME-Journal Papers(저널논문)
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