Optimization of the conductivity of microwave components printed by inkjet on polymeric substrates by photonic sintering

Hajjaji, Chaimaa El; Delhote, Nicolas; Verdeyme, Serge; Piechowiak, Malgorzata Anna; Durand, Olivier

doi:10.23919/eumc48046.2021.9338007

Cited by 2 publications

(3 citation statements)

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“…However, once the metal layer is formed on the surface of the film, the internal gases are not easily evaporated, which could cause the film to swell during reflow of the surface metal layer in the second or third light irradiation, as explained in [5]. As seen in [31], this result leads to a small dwelling for samples 2 and 3. In sample 4, we notice that burnt areas are at the level of the metal layer because of the extremely short time between the pulses (T off = 438 μs), which did not allow sufficient cooling time for the metal deposit.…”

Section: Processing Of Aerosol Jet Printed and Oven-dried Samplesmentioning

confidence: 97%

“…This treatment technique saves time and can homogeneously The sintering equipment used in this work is a Xenon X-1100 IPL system that generates precisely controlled light pulses of high intensity. This system is presented in [31] with more details. Notably, the system cannot deliver the same energy for each light pulse.…”

Section: Ipl Sinteringmentioning

confidence: 99%

“…An earlier version of this paper was presented at the EuMW2020 conference and was published in its Proceedings [31]. In this extended version, two additional IPL processing parameters are presented accompanied by SEM images of a sectional view of the metal deposit.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of the conductivity of microwave components printed by inkjet and aerosol jet on polymeric substrates by IPL and laser sintering

Hajjaji

Delhote

Verdeyme

et al. 2021

Int. J. Microw. Wireless Technol.

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In this work, microwave planar resonators are printed with silver nanoparticle inks using two printing technologies, inkjet printing and aerosol jet printing, on polyimide substrates. The microwave resonators used in this paper operate in the frequency band 5–21 GHz. The printing parameters, such as the number of printed layers of silver nanoparticle inks, drop spacing, and sintering time, were optimized to ensure repeatable and conductive test patterns. To improve the electrical conductivity of silver deposits, which are first dried using a hot plate or an oven, two complementary sintering methods are used: intense pulsed light (IPL) and laser sintering. This paper presents the results of different strategies for increasing the final quality factor of printed planar resonators and the trade-offs (sintering time versus final conductivity/unloaded Q) that can be reached. Improvement of the resonator unloaded quality factor (up to +55%) and of the equivalent electrical conductivity (up to 14.94 S/μm) at 14 GHz have been obtained thanks to these nonconventional sintering techniques. The total sintering durations of different combinations of sintering techniques (hot plate, oven, IPL, and laser) range from 960 to 90 min with a final conductivity from 14.94 to 7.1 S/μm at 14 GHz, respectively.

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Section: Processing Of Aerosol Jet Printed and Oven-dried Samplesmentioning

confidence: 97%

Section: Ipl Sinteringmentioning

confidence: 99%