Method for storage of silicon wafer

Fishing – trapping – and vermin destroying

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437250, 437946, 148DIG17, H01L 21302

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active

054847486

ABSTRACT:
The single crystal silicon wafers which have undergone a treatment with a chemical liquid such as an acid or an alkali are stored without entailing contamination of their surfaces by causing the wafers to be immediately immersed, either directly or after being washed with water, in an aqueous hydrogen peroxide solution. The prevention of the contamination of surfaces of the wafers is attained effectively by setting the concentration of hydrogen peroxide in the aqueous hydrogen peroxide solution in the range of from 0.01 to 30% by weight and the temperature of the aqueous hydrogen peroxide solution at the time that the wafers are immersed in the solution in the range of from 10.degree. to 30.degree. C.

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S. Wolf & R. N. Tauber, "Silicon Processing for the VLSI Era", 1986 vol. I, pp. 514-521, 531-535.
C. Okada, et al., Jpn. J. Appl. Phys., 32 (1993) L1031 "Accumulation of Organic Matter on Bare Si Wafer in Air".
M. Grunder, J. Vac. Sci. Technol., A5, 4 (1987) 2011 "HREELS Measurements on Hydrophilic Si (100) Wafers . . . ".

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