Method for cleaning a semiconductor wafer
AssigneeSiltronic AG
InventorsAlbert KÜHNSTETTER, Damian BROCK
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AssigneeSiltronic AG
InventorsAlbert KÜHNSTETTER, Damian BROCK
Estimating the term…
A facing and reverse side of a semiconductor wafer are cleaned by: cleaning the facing side by, in order: precleaning with water such that the facing side is still wet as the next cleaning step begins; a first cleaning step with ozonized water and a subsequent rinsing step with purified water; a second cleaning step with a treatment with ozonized water followed by a treatment with a liquid containing HF; and a third cleaning step with ozonized water and a subsequent rinsing with purified water. Next, the facing side and the reverse side are jointly cleaned by: a fourth cleaning step, which includes a treatment with ozonized water followed by a treatment with a liquid comprising HF, and a drying step, in which both the facing side and the reverse side of the semiconductor wafer are dried.
A method for cleaning a facing side and a reverse side of a semiconductor wafer, the method comprising, in the order given:
Dependencies are inferred from the claim text.