Outgassing Test for Cleanroom Construction Materials and Polymers

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  • クリーンルーム構成材料および樹脂材料の発生ガス試験
  • クリーンルーム コウセイ ザイリョウ オヨビ ジュシ ザイリョウ ノ ハッセイ ガス シケン

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Abstract

With increasing integration of semiconductor devices, organic contaminants adhering to silicon wafer surfaces have become a serious problem because they strongly affect production yield and device performance. The cleanroom construction materials and polymers are the major source of organic contaminants in cleanroom. Therefore, outgassing test for cleanroom construction materials and polymers is just as important as the evaluation of organic contaminants in cleanroom air, because it will help us identify the organic contaminant sources and mechanisms of organic contamination. At present, outgassing test method for organic compounds with high boiling-points is to be established because polar organic compounds with high boiling-points tend to adhere to silicon wafer surfaces more strongly than the other organic compounds. We employed five outgassing test methods for cleanroom construction materials and polymers, which can be used for mini-environment and wafer carrier boxes, and studied the relationships between the outgassing condition and the outgassing test results. We found that there is a linearity between the logarithm of outgassing amount and the reciprocal of temperature, 1/T. The outgassing amount at an arbitrary temperature can be evaluated with a few data of other temperature by using the linearity.

Journal

  • Earozoru Kenkyu

    Earozoru Kenkyu 14 (4), 348-356, 1999

    Japan Association of Aerosol Science and Technology

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