An investigation of moisture and oxygen contamination in a vacuum loadlock single-wafer cluster tool

Vacuum loadlocked cluster tools have allowed significant improvement in reactor ambient control to be realized for low-pressure chemical vapor deposition relative to equipment configurations which expose the reaction chamber to cleanroom ambient impurities each time wafers are processed. We found, h...

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Main Authors: Wise, R.L., Tapp, F.L., Frystak, D.C., Fowler, B.W.
Format: Conference Proceeding
Language:English
Subjects:
Calibration
Chemical vapor deposition
Impurities
Inductors
Instruments
Moisture control
Nitrogen
Oxygen
Sampling methods
Surface contamination
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Tapp, F.L.
Frystak, D.C.
Fowler, B.W.
description Vacuum loadlocked cluster tools have allowed significant improvement in reactor ambient control to be realized for low-pressure chemical vapor deposition relative to equipment configurations which expose the reaction chamber to cleanroom ambient impurities each time wafers are processed. We found, however, that substantial moisture and oxygen contamination can still be introduced into the cluster platform via the vacuum loadlock. Residual gas analysis was used to identify the wafer cassettes as the major source of impurities. Equipment operating procedures were developed to minimize migration of these contaminants from the loadlocks to the process chamber.
doi_str_mv 10.1109/ISSM.1997.664539
format conference_proceeding
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Calibration
Chemical vapor deposition
Impurities
Inductors
Instruments
Moisture control
Nitrogen
Oxygen
Sampling methods
Surface contamination
title An investigation of moisture and oxygen contamination in a vacuum loadlock single-wafer cluster tool
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