Progress in thick-film pad printing technique for solar cells

Hahne, Peter; Hirth, Erhard; Reis, I.; Schwichtenberg, Klaus; Richtering, Walter; Horn, F. M.; Eggenweiler, U.

doi:10.1016/s0927-0248(00)00119-7

Cited by 47 publications

(29 citation statements)

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“…Its main advantage of cost effectiveness is one of the key features which are required in a wide range of newly emerging applicationoriented industries such as printed electronics 1,2 and multi-layered solar cell productions. [3][4][5][6] A body of recent studies found in the literature is a direct evidence of growing interest from both academia and industry.…”

Section: Introductionmentioning

confidence: 99%

Study on the web deformation in ink transfer process for R2R printing application

Kim

2010

Int. J. Precis. Eng. Manuf.

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Web deformation occurring in the ink transfer process from the printing roller to the flexible web was investigated using a CFD technique for the application in roll-to-roll printed electronics. Analysis for the flow-structure interaction was conducted to assess the deflection and stress distributions of the web. To make the present analysis more relevant to the real printing system, both realistic geometric configuration and ink properties were set up using the information obtained from the typical roll-to-roll system. Fluid properties were found to influence to the shape of the transferred ink and the web deformation. As the line width becomes smaller than 100 microns, the appreciable distortion in the shape of the transferred ink occurred due to a relative importance of surface tension. Non-negligible web deflection occurs in all the cavity geometries considered in the present work but the ratio of the web deflection to the line width gets smaller as the printing pattern width becomes smaller. Thus, the surface and deflection will be important factors for the better printing quality under the 100 micron range.

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Section: Introductionmentioning

confidence: 99%

Study on the web deformation in ink transfer process for R2R printing application

Kim

2010

Int. J. Precis. Eng. Manuf.

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“…In the past, a series of experimental studies were reported to identify the effect of rotational speed of roll, degrees of impression and ink and material property of the substrate [1][2][3]. A high cost for the experimental investigation, however, put several limits on the detailed analysis required for a wide range of relevant parameters.…”

Section: Introductionmentioning

confidence: 99%

Analysis on the ink transfer mechanism in R2R application

Lee

2010

J Mech Sci Technol

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Ink transfer process from the printing roll to the web was investigated using a Computational Fluid Dynamics (CFD) technique for the roll-to-roll (R2R) printing application. A parametric study was conducted to identify the effects of fluid parameters such as viscosity, surface tension and contact angle. To make the present analysis more relevant to the real printing system, a three-dimensional computational configuration for the commercial software was set up using the information obtained from the typical R2R system. Simplified onedimensional semi-analytic model based on Reynolds equation was compared with the CFD results to assess the validity of the results. Pressure distribution states that 1-D analysis is reasonably good in capturing the flow physics. The 3-D simulation with VOF (Volume of Fluid) shows that viscosity is the most important parameter. Moreover, the larger surface tension resulted in smaller amount of ink transfer.

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“…[4][5][6][7][8] It is known that most of the conductive inks are used with solvents with different material properties. Obtaining a complete knowledge on the ink property is critical but in reality, exact constitutive information for the conductive ink is not easy to get at present.…”

Section: Introductionmentioning

confidence: 99%

Effect of roll patterns on the Ink transfer in R2R printing process

Lee

2009

Int. J. Precis. Eng. Manuf.

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Ink transfer process from the printing roller to the web was investigated using a CFD technique for the roll-to-roll printing applications. A parametric study was conducted to identify the effects of roll pattern geometry on the ink transfer process. In order to make the present analysis more relevant to the real printing system, 3-D computational configuration was set up using the information obtained from the typical roll-to-roll system. Simplified one-dimensional semi-analytic analysis based on Reynolds equation was also conducted in order to assess the validity of the 3-D CFD results. Pressure information suggests that even a simplified 1-D analysis is reasonably good in capturing the relevant flow physics. 3-D simulation shows that the quality of the ink transfer process is very sensitive to the width of the roll patterns. This sensitivity is believed to be due to the relative importance of surface tension over any other force modes under the 100 micrometer range.

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Progress in thick-film pad printing technique for solar cells

Cited by 47 publications

References 0 publications

Study on the web deformation in ink transfer process for R2R printing application

Study on the web deformation in ink transfer process for R2R printing application

Analysis on the ink transfer mechanism in R2R application

Effect of roll patterns on the Ink transfer in R2R printing process

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