In this article, we will study the influence of the abrasive particle size in the polishing liquid and the polishing process parameters on the formation of scratches on the surface of the GaAs wafer during the polishing process, and reveal the genesis of the scratches on the surface of the GaAs wafer. For GaAs materials with anisotropic properties, under the same polishing solution formulation and polishing process, the distribution characteristics of scratches on surfaces with different crystal orientations will be studied. It provides theoretical support for suppressing the formation of scratches on the wafer surface and improving the surface polishing quality of semiconductor wafers.
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