Sintering of inkjet printed silver tracks with boiling salt water

Olkkonen, Juuso; Leppäniemi, Jaakko; Mattila, T.; Eiroma, Kim

doi:10.1039/c3tc32565b

Cited by 28 publications

(29 citation statements)

References 33 publications

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“…4), transparent coatings and embedded microwires in a PET foil. 94,95 Treatment times of 20 to 30 min resulted in conductivities of 0.2 to 50% of bulk Ag at room temperature and 110 C, respectively. 4).…”

Section: Chemical Sintering Of Nanoparticle Inksmentioning

confidence: 99%

Progress of alternative sintering approaches of inkjet-printed metal inks and their application for manufacturing of flexible electronic devices

Wünscher¹,

Abbel²,

Perelaer³

et al. 2014

J. Mater. Chem. C

244

222

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Well-defined high resolution structures with excellent electrical conductivities are key components of almost every electronic device. Producing these by printing metal based conductive inks on polymer foils represents an important step forward towards the manufacturing of plastic electronic products on an industrial scale. The development of fast, efficient and inexpensive post-deposition sintering technologies for these materials is an important processing step to make this approach commercially viable. This review discusses the advances in alternative sintering approaches for conductive, metal containing inks, which can be processed by inkjet-printing processes. Each sintering approach is examined regarding its mechanism, its compatibility with commonly used materials in the field of flexible electronics, its compatibility with high-throughput manufacturing processes and its applicability to the production of flexible electronic devices.

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Section: Chemical Sintering Of Nanoparticle Inksmentioning

confidence: 99%

Progress of alternative sintering approaches of inkjet-printed metal inks and their application for manufacturing of flexible electronic devices

Wünscher¹,

Abbel²,

Perelaer³

et al. 2014

J. Mater. Chem. C

244

222

View full text Add to dashboard Cite

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“…However, this mechanism cannot explain the shutdown of the process at 473 K Table I] inspired us to hypothesize that the liquid solvent might play an important role in the sintering process of the silver nanoparticles. This hypothesis is also supported by the previously developed sintering methods using boiling salt water [32] and electrolyte solutions. [33] Therefore, we proposed a transition for the sintering mechanism of nanoparticles as illustrated in Figure 4 to explain the observed phenomenon of the critical tem- perature.…”

Section: Experiments and Discussionmentioning

confidence: 52%

“…Although more elaborated experiments with more sophisticated equipment should be conducted to fully validate the proposed sintering mechanisms, the experimental evidence and analysis presented in this paper nevertheless strongly support a connection between the observed critical temperature and the boiling point of the solvent. As already demonstrated to be useful for the sintering process using boiling salt water [32] and electrolyte solutions, [33] the role of the liquid in the sintering process should be further explored in order to develop new sintering methods for envisioned applications.…”

Section: Experiments and Discussionmentioning

confidence: 99%

“…Magdassi and coworkers developed a process to trigger the sintering process at room temperature by modification of the surface properties of the nanoparticles through charge neutralization and desorption of stabilizer. [30,31] Olkkonen et al [32] demonstrated an approach for sintering inkjet-printed conductive lines using boiling salt water. Long et al developed a rapid sintering method for silver nanoparticles by immersing them in electrolyte solutions.…”

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confidence: 99%

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Sintering Kinetics of Inkjet-Printed Conductive Silver Lines on Insulating Plastic Substrate

Zhou

List

Duty

et al. 2015

Metall Mater Trans B

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This paper focuses on sintering kinetics of inkjet-printed lines containing silver nanoparticles deposited on a plastic substrate. Upon heat treatment, the change of resistance in the printed lines was measured as a function of time and sintering temperatures from 423 K to 473 K (150°C to 200°C). A new phenomenon was observed that a critical temperature existed for the sintering process, beyond which there was no further reduction in resistance. Experimental evidence and analysis show the critical temperature is associated with the boiling point of the solvent. New sintering mechanisms have been proposed to explain the observed phenomenon, including accelerated diffusion facilitated by the existence of liquid solution based on the theory of liquid phase sintering, and particle collision and coalescence caused by the induced liquid flows in the solution. The proposed theory suggest new means can be devised to improve the sintering results for inkjet-printed lines and other applications.

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“…On-demand printing can be classified into three types: (1) the bulb inkjet system, where ink droplets are pressed and ejected by opening and closing a bulb [6], (2) the piezoelectric inkjet system, where ink droplets are ejected by vibration of the piezoelectric element by voltage impression [7], and (3) the bubble inkjet system, where ink droplets are ejected with the pressure of bubbles by heating ink locally [8]. Now, they are also bringing another great innovation.…”

Section: Introductionmentioning

confidence: 99%