Hot-melt screen-printing of front contacts on crystalline silicon solar cells

This work describes a study of hot-melt (HM) screen-printing of front contacts as a function of print speed, print table temperature, squeegee temperature, paste composition and firing profiles. The results presented here will show that it is possible to print lines with higher aspect ratio compared...

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Bibliographic Details
Published inConference Record of the Thirty-first IEEE Photovoltaic Specialists Conference, 2005 pp. 1084 - 1087
Main Authors Olaisen, B.R., Holt, A., Marstein, E.S., Sauar, E., Shaikh, A., McVicker, K., Salami, J., Miranda, H., Kim, S.S.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2005
Subjects
Circuits
Crystallization
Electrodes
Fingers
Firing
Heating
Photovoltaic cells
Printing
Silicon
Temperature
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Summary:This work describes a study of hot-melt (HM) screen-printing of front contacts as a function of print speed, print table temperature, squeegee temperature, paste composition and firing profiles. The results presented here will show that it is possible to print lines with higher aspect ratio compared with standard screen-printing. Optimum parameters for printing seems to be high print speed in combination high squeegee temperature. There is a trade off between the height and width of the finger lines when adjusting the table temperature. Firing with fingers facing down at high belt speeds results in shrinking of line width between 15% and 20%. At present, the best efficiency results from HM screen-printing are at par with standard printed solar cells.
ISBN:9780780387072
0780387074
ISSN:0160-8371
DOI:10.1109/PVSC.2005.1488323