Process for treating a semiconductor wafer

Mixtures containing concentrated sulfuric acid used for stripping photoresist from semiconductor wafer, such as SOM and SPM mixtures, are more quickly removed from a wafer surface using another liquid also containing high concentration of sulfuric acid, with the second liquid furthermore containing...

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Hauptverfasser:	FRANK DIETER, KUMNIG FRANZ, OKORN-SCHMIDT HARALD
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY
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creator	FRANK DIETER KUMNIG FRANZ OKORN-SCHMIDT HARALD
description	Mixtures containing concentrated sulfuric acid used for stripping photoresist from semiconductor wafer, such as SOM and SPM mixtures, are more quickly removed from a wafer surface using another liquid also containing high concentration of sulfuric acid, with the second liquid furthermore containing controlled small amounts of fluoride ion. The second liquid renders the wafer surface hydrophobic, which permits easy removal of the sulfuric acid therefrom by spinning and/or rinsing.
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subjects	CHEMICAL SURFACE TREATMENT CHEMISTRY CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY
title	Process for treating a semiconductor wafer
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