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Title:
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The importance of paste rheology in improving fine line, thick film screen printing of front side metallization
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Author(s):
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Published by:
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Publication date:
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ECN
Solar Energy
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1997
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ECN report number:
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Document type:
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ECN-RX--97-026
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Conference Paper
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Number of pages:
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Full text:
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6
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Download PDF
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Published in: Paper, presented at the 14th European photovoltaic solar energy conference and exhibition, 30 June - 4 July, 1997, Barcelona, Sp (), , , Vol., p.-.
Abstract:
An important requirement in the processing of front side metallizationfor solar cells is to print fine lines with a high aspect ratio in mass
production. Rheology is a key feature to describe the paste printing
behaviour, but it is difficult to both characterize the aspects of easy
printing and non-slumping using basic rotation viscometry. In this work a new
approach is applied, using oscillation rheometry, to simulate the paste
behaviour during printing in a single experiment. Time tests are performed on
seven commercially available silver pastes, and are interpreted in terms of
easy printing, slumping, etc. The results of screen printing tests on the
seven pastes confirm the interpretation of the measured complex shear modulus
and loss angle. 4 figs., 1 tab., 6 refs.
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