ETCHING LIQUID FOR FORMING TEXTURE

摘要

In the present invention, by using an etching liquid for silicon wafers, which comprises an aqueous solution containing (A) an alkali component and (B) a phosphonic acid derivative or a salt thereof, a good texture can be stably and uniformly formed on a wafer surface. The present invention provides a texture-forming etching liquid for silicon wafers, which is applicable to both wafers cut by a loose abrasive grain system and wafers cut by a fixed abrasive grain system with no vaporization of additive components in the region of working temperatures of from 60° C. to 95° C.