Rheological analysis of ceramic pastes with ethyl cellulose for screen-printing

Inukai, Koji; Takahashi, Yosuke; Ri, Kinki; Shin, Woosuck

doi:10.1016/j.ceramint.2015.01.032

Cited by 39 publications

(20 citation statements)

References 13 publications

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“…Ethyl cellulose (EC), a cellulose derivative, has been proven to be an indispensable binder in the developed inks, providing the necessary rheological properties for screen printing. Additionally, this eco-friendly biopolymer provides excellent printability and leveling [ 14 ] combined with excellent adhesion to paper substrates. Proper formulation of the ZnO printable ink allows one to process these devices at temperatures below 150 °C, totally compatible with paper substrates.…”

Section: Introductionmentioning

confidence: 99%

Fully Printed Zinc Oxide Electrolyte-Gated Transistors on Paper

et al. 2019

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Fully printed and flexible inorganic electrolyte gated transistors (EGTs) on paper with a channel layer based on an interconnected zinc oxide (ZnO) nanoparticle matrix are reported in this work. The required rheological properties and good layer formation after printing are obtained using an eco-friendly binder such as ethyl cellulose (EC) to disperse the ZnO nanoparticles. Fully printed devices on glass substrates using a composite solid polymer electrolyte as gate dielectric exhibit saturation mobility above 5 cm2 V−1 s−1 after annealing at 350 °C. Proper optimization of the nanoparticle content in the ink allows for the formation of a ZnO channel layer at a maximum annealing temperature of 150 °C, compatible with paper substrates. These devices show low operation voltages, with a subthreshold slope of 0.21 V dec−1, a turn on voltage of 1.90 V, a saturation mobility of 0.07 cm2 V−1 s−1 and an Ion/Ioff ratio of more than three orders of magnitude.

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Section: Introductionmentioning

confidence: 99%

Fully Printed Zinc Oxide Electrolyte-Gated Transistors on Paper

et al. 2019

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“…For this reason, the viscosity increases sharply when the solid content of TiO 2 is over 35 wt %. To make a screen‐printable paste, the viscosity of the paste should be larger than 1 Pa s . According to Figure , the viscosity of the paste increased with increasing solid content in the suspensions.…”

Section: Resultsmentioning

confidence: 82%

“…Then the P25/ EGBEm ixture in geometry could be divided into an umber of units where the P25 particle is in the center surrounded by the EGBE solvent molecules.I nt his case,t he size of the distance of each TiO 2 particle could be calculated as approximately 12.45, 12.04, 11.67,a nd 11.26 nm when the solid con- To make as creen-printable paste,t he viscosity of the paste should be larger than 1Pas. [42][43][44] According to Figure 2, the viscosity of the paste increased with increasing solidc ontent in the suspensions.A ss hown in the inset of Figure 2, it is difficult to print TiO 2 films by screen printing using ap aste containingasolid content of TiO 2 less than 35 wt %d ue to its uncontrolled running behavior. Therefore, screen-printable paste can be obtainedo nly when the solid content is 35 or 36 wt %.…”

Section: Resultsmentioning

confidence: 92%

Fabrication of Flexible Dye‐Sensitized Solar Cell Modules using Commercially Available Materials

Huang

Zhong

et al. 2016

Energy Tech

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Fully printed, flexible dye‐sensitized solar cell (DSSC) modules (10 cm×10 cm in size) were successfully fabricated by screen printing. The crucial issue and difficulty in fabrication of flexible DSSC modules is developing a binder‐free, screen‐printable TiO2 paste. Results show that the viscosity of the TiO2 paste can be adjusted by the solid content. A binder‐free, screen‐printable TiO2 paste with high viscosity was synthesized to enable the low‐temperature fabrication of the flexible DSSC modules on plastic substrates. The architecture of series connection was introduced into flexible DSSC modules to get the best module efficiency. The best power conversion efficiency of the flexible DSSC modules of 10 cm×10 cm in size with the series connection was approximately 3 %.

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“…Inukai et al used a 3‐step recovery test (oscillation‐rotation‐oscillation) to investigate the structure recovery of LSTF inks, that may be used for screen printing electrode structures directly. They calculated a recovery ratio to determine the breakdown of their polymer‐particle network.…”

Section: Resultsmentioning

confidence: 99%

“…For example, larger particles or adding dispersants can reduce the viscosity significantly. Knowledge of the rheological properties is required for industrial processing, because every change of the ink structure due to temperature changes or differences during the ink production should be recognized and prevented …”

Section: Introductionmentioning

confidence: 99%

Development and characterization of inks for screen printing of glass solders for SOFCs

Dittrich

Reitz

Schell

et al. 2020

Int J Applied Ceramic Tech

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Glass ceramics are supposed to produce stable sealants between ceramic electrolyte and ferritic steel in planar SOFC stacks. The screen printing method is a suitable industrial process in order to produce layers with tailored height and width reproduc-ibly. An appropriate suspension was developed for this application and improved by adjusting the additive composition. This study investigates the rheological behavior of screen printing inks and the corresponding topography of the printed layers. Rotary measurements were carried out to analyse the impact of shear rates on viscosity showing shear thinning behavior. In addition, oscillatory rheometry is performed to gain information about the viscoelastic properties of the slurries and to understand the internal structure of the developed inks. The viscoelasticity and the recovery behavior after shear loading are crucial for the topography of printed films.The principal investigations are executed on solvent-based suspensions, whereby the knowledge gained is used for a transfer to water-based systems allowing a more environmentally friendly handling.

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Rheological analysis of ceramic pastes with ethyl cellulose for screen-printing

Cited by 39 publications

References 13 publications

Fully Printed Zinc Oxide Electrolyte-Gated Transistors on Paper

Fully Printed Zinc Oxide Electrolyte-Gated Transistors on Paper

Fabrication of Flexible Dye‐Sensitized Solar Cell Modules using Commercially Available Materials

Development and characterization of inks for screen printing of glass solders for SOFCs

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