Method for cleaning solar cell substrates
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United States of America Patent
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Issued Date -
Aug 28, 2008
app pub date -
Dec 27, 2007
filing date -
Dec 29, 2006
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Abandoned
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Abstract
The present invention relates to a method for cleaning solar cell substrates comprising (S11) slicing an ingot for manufacturing solar cell substrates, which is hung from a slicing machine, into a plurality of substrates, and placing the substrates into a cleaning machine as the substrates are vertically hung down from the slicing machine parallel to each other; (S12) removing the cutting oil remaining on surfaces of the substrates placed vertically; (S13) activating the surfaces of the substrates for better cleaning of the surfaces of the substrates; and (S14) chemically etching the active surfaces of the substrates. The cleaning process is performed on the substrates directly as the substrates are placed in the slicing process. Therefore, the present invention prevents breakage or additional contamination of the substrates which may occur in an intermediate handling process, and effectively removes slurry between adjacent substrates and various stains on the surfaces of the substrates.
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