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@ARTICLE{Rosen:837516,
author = {Rosen, Yitzchak S. and Yakushenko, Alexey and
Offenhäusser, Andreas and Magdassi, Shlomo},
title = {{S}elf-{R}educing {C}opper {P}recursor {I}nks and
{P}hotonic {A}dditive {Y}ield {C}onductive {P}atterns under
{I}ntense {P}ulsed {L}ight},
journal = {ACS omega},
volume = {2},
number = {2},
issn = {2470-1343},
address = {Washington, DC},
publisher = {ACS Publications},
reportid = {FZJ-2017-06412},
pages = {573 - 581},
year = {2017},
abstract = {Printing conducting copper interconnections on plastic
substrates is of growing interest in the field of printed
electronics. Photonic curing of copper inks with intense
pulsed light (IPL) is a promising process as it is very fast
and thus can be incorporated in roll-to-roll production. We
report on using IPL for obtaining conductive patterns from
inks composed of submicron particles of copper formate, a
copper precursor that has a self-reduction property.
Decomposition of copper formate can be performed by IPL and
is affected both by the mode of energy application and the
properties of the printed precursor layer. The energy
application mode was controlled by altering three pulse
parameters: duration, intensity, and repetitions at 1 Hz. As
the decomposition results from energy transfer via light
absorption, carbon nanotubes (CNTs) were added to the ink to
increase the absorbance. We show that there is a strict set
of IPL parameters necessary to obtain conductive copper
patterns. Finally, we show that by adding as little as 0.5
wt $\%$ single-wall CNTs to the ink the absorptance was
enhanced by about $50\%$ and the threshold energy required
to obtain a conductive pattern decreased by $∼25\%.$ These
results have major implications for tailoring inks intended
for IPL processing.},
cin = {ICS-8},
ddc = {540},
cid = {I:(DE-Juel1)ICS-8-20110106},
pnm = {523 - Controlling Configuration-Based Phenomena (POF3-523)},
pid = {G:(DE-HGF)POF3-523},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000395863300024},
doi = {10.1021/acsomega.6b00478},
url = {https://juser.fz-juelich.de/record/837516},
}