Roll‐to‐Roll Compatible Sintering of Inkjet Printed Features by Photonic and Microwave Exposure: From Non‐Conductive Ink to 40% Bulk Silver Conductivity in Less Than 15 Seconds

Perelaer, Jolke; Abbel, Robert; Wünscher, Sebastian; Jani, Robin; Lammeren, Tim van; Schubert, Ulrich S.

doi:10.1002/adma.201104417

Cited by 202 publications

(142 citation statements)

References 21 publications

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“…The smaller the particle size the lower the sintering temperature can be; however, care has to be taken to design the ink sintering not to exceed temperatures of the other materials printed to. Photonic sintering is an approach that can circumvent this issue by flooding quick flashes of light at high powers so there is only surface effect [75]. Under the right conditions, the energy is absorbed by the surface and quickly dissipates as a function of depth so the materials below the surface are selectively cooler.…”

Section: Postprint Sintering Of Metal Np Inksmentioning

confidence: 99%

Printable Materials for the Realization of High Performance RF Components: Challenges and Opportunities

Rosker

Sandhu

Hester

et al. 2018

International Journal of Antennas and Propagation

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Printing methods such as additive manufacturing (AM) and direct writing (DW) for radio frequency (RF) components including antennas, filters, transmission lines, and interconnects have recently garnered much attention due to the ease of use, efficiency, and low-cost benefits of the AM/DW tools readily available. The quality and performance of these printed components often do not align with their simulated counterparts due to losses associated with the base materials, surface roughness, and print resolution. These drawbacks preclude the community from realizing printed low loss RF components comparable to those fabricated with traditional subtractive manufacturing techniques. This review discusses the challenges facing low loss RF components, which has mostly been material limited by the robustness of the metal and the availability of AM-compatible dielectrics. We summarize the effective printing methods, review ink formulation, and the postprint processing steps necessary for targeted RF properties. We then detail the structure-property relationships critical to obtaining enhanced conductivities necessary for printed RF passive components. Finally, we give examples of demonstrations for various types of printed RF components and provide an outlook on future areas of research that will require multidisciplinary teams from chemists to RF system designers to fully realize the potential for printed RF components.

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Section: Postprint Sintering Of Metal Np Inksmentioning

confidence: 99%

Printable Materials for the Realization of High Performance RF Components: Challenges and Opportunities

Rosker

Sandhu

Hester

et al. 2018

International Journal of Antennas and Propagation

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“…Traditionally this was used for high volume production, e.g., newspapers. However, developments in technology have allowed the inkjet to be used in roll-to-roll production of electronic circuits using nanoparticulate silver inks 20 . The inkjet is therefore an attractive process for the potential production of dye-sensitized solar cells by digital printing.…”

Section: Introductionmentioning

confidence: 99%

Digital Printing of Titanium Dioxide for Dye Sensitized Solar Cells

Cherrington

Wood

Salaoru

et al. 2016

JoVE

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Silicon solar cell manufacturing is an expensive and high energy consuming process. In contrast, dye sensitized solar cell production is less environmentally damaging with lower processing temperatures presenting a viable and low cost alternative to conventional production. This paper further enhances these environmental credentials by evaluating the digital printing and therefore additive production route for these cells. This is achieved here by investigating the formation and performance of a metal oxide photoelectrode using nanoparticle sized titanium dioxide. An ink-jettable material was formulated, characterized and printed with a piezoelectric inkjet head to produce a 2.6 µm thick layer. The resultant printed layer was fabricated into a functioning cell with an active area of 0.25 cm 2 and a power conversion efficiency of 3.5%. The binder-free formulation resulted in a reduced processing temperature of 250 °C, compatible with flexible polyamide substrates which are stable up to temperatures of 350 ˚C. The authors are continuing to develop this process route by investigating inkjet printing of other layers within dye sensitized solar cells. Video LinkThe video component of this article can be found at

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“…[1][2][3][4] During last few decades, various direct printing technologies including roll-toroll (R2R), gravure printing, screen printing, dip-pen, inkjet printing and three dimensional printing have been developed for electronics patterning of sensor, light emitting diode (LED), radio frequency (RF) tags, flexible display and other micro/nano-sized components. [5][6][7][8][9][10][11] Recently, nanomaterials have been used in various applications due to its particular electrical, chemical, optical and physical properties. [12][13][14][15] Therefore, a lot of efforts have been devoted for implementation of the nanomaterials into industrial manufacturing processes.…”

mentioning

confidence: 99%

Direct Micro Metal Patterning on Plastic Substrates by Electrohydrodynamic Jet Printing for Flexible Electronic Applications

Kwon

Hong

Suh

et al. 2015

ECS J. Solid State Sci. Technol.

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Direct printing is an attractive technology for the patterning of nanomaterials that enables low-cost fabrication of micro/nano-sized electrical devices through minimal use of materials with non-vacuum environment. Although direct printing opens new border for the patterning technology, its resolution has been highly restricted mainly due to its solution-based properties. When the solution contains much liquid, it spreads out on the substrate after printing. While less liquid solution causes clogging at the orifice. In this study, electrohydrodynamic (EHD) jet printer is employed to use both low and high content of nanomaterial solutions: low viscosity nanoink and high viscosity nanopaste. Meanwhile, there are several considerable factors including ink property for operating EHD jet printer such as substrates, voltage condition and working speed. Therefore, parametric studies are conducted to gain fine patterning. As a results, EHD jet printed silver conductive line at high resolution is achieved on various plastic substrates for flexible device applications. As an alternative to the conventional photolithography in the microelectronic manufacturing process, direct printing has been widely interested. The merit of the direct printing technology is known as on-demand digital material deposition & patterning, which leads to process cost reduction, use of no vacuum and mask, compatibility with various substrates and minimization of material wastes.1-4 During last few decades, various direct printing technologies including roll-toroll (R2R), gravure printing, screen printing, dip-pen, inkjet printing and three dimensional printing have been developed for electronics patterning of sensor, light emitting diode (LED), radio frequency (RF) tags, flexible display and other micro/nano-sized components.5-11 Recently, nanomaterials have been used in various applications due to its particular electrical, chemical, optical and physical properties. [12][13][14][15] Therefore, a lot of efforts have been devoted for implementation of the nanomaterials into industrial manufacturing processes. Especially in direct printing, metal nanoparticles such as gold, silver and copper are often required to be synthesized in a form of nanoink, paste or suspension since the nano-sized metal materials provide a significant benefit: low annealing temperature owing to its high surface to volume ratio. [16][17][18][19] Nevertheless, direct printing techniques with nanomaterial solutions have several inherent drawbacks such as coffee stain effect, unclear edge sharpness and limitation on the minimum line width (typically >50 μm) because the process and features are strongly dependent on solution property. [20][21][22] For example, inkjet printing usually uses only low viscosity solution to successfully generate droplet and prevent the nozzle clogging. When volume of the droplet gets smaller, droplet flows up to the surface of the capillary nozzle due to surface tension of the solution and its capillary force. Subsequently, undesirable printing suc...

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Roll‐to‐Roll Compatible Sintering of Inkjet Printed Features by Photonic and Microwave Exposure: From Non‐Conductive Ink to 40% Bulk Silver Conductivity in Less Than 15 Seconds

Cited by 202 publications

References 21 publications

Printable Materials for the Realization of High Performance RF Components: Challenges and Opportunities

Printable Materials for the Realization of High Performance RF Components: Challenges and Opportunities

Digital Printing of Titanium Dioxide for Dye Sensitized Solar Cells

Direct Micro Metal Patterning on Plastic Substrates by Electrohydrodynamic Jet Printing for Flexible Electronic Applications

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